Counting starts in Nigeria's delayed poll marked by violence

Women and men queue separately as they wait to cast their votes at a polling station on the outskirts of Kano, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Women and men queue separately as they wait to cast their votes at a polling station on the outskirts of Kano, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Women queue in line to cast their votes in the village of Tumfafi, near Kano, in northern Nigeria, Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Women queue in line to cast their votes in the village of Tumfafi, near Kano, in northern Nigeria, Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari gestures to supporters after casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari gestures to supporters after casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Women line up to cast their vote in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Women line up to cast their vote in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
A baby sleeps on his mother's back as women queue in line to cast their votes in the village of Tumfafi, near Kano, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
A baby sleeps on his mother's back as women queue in line to cast their votes in the village of Tumfafi, near Kano, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigerian voters wait for the scheduled opening of the polling stations in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian voters wait for the scheduled opening of the polling stations in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian election officials perform final checks after votes were counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigerian election officials perform final checks after votes were counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigerian election officials use their cellphone lights to count ballots in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigerian election officials use their cellphone lights to count ballots in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Two Nigerian men check their phones as votes are being counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Two Nigerian men check their phones as votes are being counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
A Nigerian security officer checks his phone as votes are being counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
A Nigerian security officer checks his phone as votes are being counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigerian election volunteers and police wait for votes to finish being counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigerian election volunteers and police wait for votes to finish being counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Opposition's presidential candidate Atiku Abubakar, left, and his wife Titi Abubakar, right, cast their votes during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Opposition's presidential candidate Atiku Abubakar, left, and his wife Titi Abubakar, right, cast their votes during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
A voter points to the record for President Muhammadu Buhari on a voter registration list, before polls open in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
A voter points to the record for President Muhammadu Buhari on a voter registration list, before polls open in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigerian election observers watch votes being counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigerian election observers watch votes being counted in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Women queue in line to cast their votes at a polling station on the outskirts of Kano, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Women queue in line to cast their votes at a polling station on the outskirts of Kano, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari casts his vote, accompanied by his wife Aisha, in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari casts his vote, accompanied by his wife Aisha, in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Nigerian election officials display ballots to the public as people line up to cast their vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian election officials display ballots to the public as people line up to cast their vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian police arrives at a polling station in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian police arrives at a polling station in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian election officials display ballots to the public as people line up to cast their vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigerian election officials display ballots to the public as people line up to cast their vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Electoral commission officials start counting the ballots for the presidential race after the Katsina road polling stating closed in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Electoral commission officials start counting the ballots for the presidential race after the Katsina road polling stating closed in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
A woman voter verifies her voter registration before casting her vote at a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
A woman voter verifies her voter registration before casting her vote at a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
People peer through a window as party agents huddle together to watch votes being counted inside a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians went to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
People peer through a window as party agents huddle together to watch votes being counted inside a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians went to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Electoral officials count ballots in front of party agents and observers at a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians went to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Electoral officials count ballots in front of party agents and observers at a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians went to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Electoral officials count ballots in front of party agents and observers at a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians went to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Electoral officials count ballots in front of party agents and observers at a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians went to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
People peer through windows as party agents inside huddle together to watch votes being counted inside a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians went to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
People peer through windows as party agents inside huddle together to watch votes being counted inside a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians went to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Party agents argue with electoral commission officials on a ballots the claim it was valid for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Party agents argue with electoral commission officials on a ballots the claim it was valid for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Women prepare to cast ballots during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Women prepare to cast ballots during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Opposition presidential candidate Atiku Abubakar waits to cast his vote during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Opposition presidential candidate Atiku Abubakar waits to cast his vote during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Opposition Presidential candidate Atiku Abubakar, center, before casting his vote at the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Opposition Presidential candidate Atiku Abubakar, center, before casting his vote at the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Leading opposition presidential candidate Atiku Abubakar, gestures as he waits to cast his vote during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Leading opposition presidential candidate Atiku Abubakar, gestures as he waits to cast his vote during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Leading opposition presidential candidate Atiku Abubakar casts his vote during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Leading opposition presidential candidate Atiku Abubakar casts his vote during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Supporters cheer as President Muhammadu Buhari leaves in his car after casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Supporters cheer as President Muhammadu Buhari leaves in his car after casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
A woman displays her voters card before casting her votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
A woman displays her voters card before casting her votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Nigerians have waited impatiently for this election, after it was delayed because of logistical "challenges," just hours before polls were set to open, but now the people get their chance to choose their leaders. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Nigerians have waited impatiently for this election, after it was delayed because of logistical "challenges," just hours before polls were set to open, but now the people get their chance to choose their leaders. (AP Photo/Sunday Alamba)
Nigerian women vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian women vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar. (AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar.(AP Photo/Jerome Delay)
Nigerians line up to vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. The election is widely seen as a tight race between President Muhammadu Buhari and his main rival, former vice president Atiku Abubakar.(AP Photo/Jerome Delay)
Voters cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Nigerians have waited impatiently for this election, after it was delayed because of logistical "challenges," just hours before polls were set to open, but now the people get their chance to choose their leaders. (AP Photo/Sunday Alamba)
Voters cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Nigerians have waited impatiently for this election, after it was delayed because of logistical "challenges," just hours before polls were set to open, but now the people get their chance to choose their leaders. (AP Photo/Sunday Alamba)
A woman thumbprints the ballot paper before casting her vote during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Nigerians have waited impatiently for this election, after it was delayed because of logistical "challenges," just hours before polls were set to open, but now the people get their chance to choose their leaders.(AP Photo/Sunday Alamba)
A woman thumbprints the ballot paper before casting her vote during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Nigerians have waited impatiently for this election, after it was delayed because of logistical "challenges," just hours before polls were set to open, but now the people get their chance to choose their leaders.(AP Photo/Sunday Alamba)
A woman cast her votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Nigerians have waited impatiently for this election, after it was delayed because of logistical "challenges," just hours before polls were set to open, but now the people get their chance to choose their leaders. (AP Photo/Sunday Alamba)
A woman cast her votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Nigerians have waited impatiently for this election, after it was delayed because of logistical "challenges," just hours before polls were set to open, but now the people get their chance to choose their leaders. (AP Photo/Sunday Alamba)
Voters wait to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters wait to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Damilu Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Nigeria's President Muhammadu Buhari leaves after casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari leaves after casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigerian women vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian women vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerians vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerians vote in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigeria's President Muhammadu Buhari speaks to the media after casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari speaks to the media after casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari casts his vote, accompanied by his wife Aisha, right, in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari casts his vote, accompanied by his wife Aisha, right, in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Women line up to cast their vote in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Women line up to cast their vote in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigeria's President Muhammadu Buhari jokingly looks across at the ballot paper of his wife Aisha, left, to see who she has voted for, before casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari jokingly looks across at the ballot paper of his wife Aisha, left, to see who she has voted for, before casting his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari arrives to cast his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari arrives to cast his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari prepares to cast his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari prepares to cast his vote in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Voters line up to cast their votes during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Nigerian men line up to cast their vote in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Nigerian men line up to cast their vote in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
A woman prepares to cast her votes during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
A woman prepares to cast her votes during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
A woman makes thumps print on her ballot before casting her votes during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
A woman makes thumps print on her ballot before casting her votes during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Nigerian voters wait for the scheduled opening of the polling stations in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian voters wait for the scheduled opening of the polling stations in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Voters line up to cast their votes during Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Voters line up to cast their votes during Presidential and National Assembly election in Yola Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Electoral officials carry ballot boxes before the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Electoral officials carry ballot boxes before the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Nigerian electoral officials distribute the voting material before the scheduled opening of the polling stations in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian electoral officials distribute the voting material before the scheduled opening of the polling stations in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian electoral officials and voters wait for the scheduled opening of the polling stations in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigerian electoral officials and voters wait for the scheduled opening of the polling stations in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakarin in the presidential election. (AP Photo/Jerome Delay)
Nigeria's President Muhammadu Buhari gestures to supporters after casting his vote in his hometown of Daura, northern Nigeria, Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari gestures to supporters after casting his vote in his hometown of Daura, northern Nigeria, Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Voters look for their names on voter registration lists before polls open in Daura, the hometown of President Muhammadu Buhari, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Voters look for their names on voter registration lists before polls open in Daura, the hometown of President Muhammadu Buhari, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari casts his vote, accompanied by his wife Aisha, in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
Nigeria's President Muhammadu Buhari casts his vote, accompanied by his wife Aisha, in his hometown of Daura, in northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
A woman casts her votes during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
A woman casts her votes during the Presidential and National Assembly election in Yola, Nigeria, Saturday, Feb. 23, 2019. Africa's most populous country goes to the polls on Saturday to decide whether President Muhammadu Buhari deserves a second term. While more than 70 people are running to lead Nigeria, the close race comes down to Buhari and a billionaire former vice president, Atiku Abubakar. (AP Photo/Sunday Alamba)
Women line up to cast their vote in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Women line up to cast their vote in Kaduna, Nigeria, Saturday, Feb. 23, 2019. Incumbent President Muhammadu Buhari is to face opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Electoral commission officials start counting the ballots for the presidential race after the Katsina road polling stating closed in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Electoral commission officials start counting the ballots for the presidential race after the Katsina road polling stating closed in Kaduna, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Jerome Delay)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
Electoral commission officials start counting the ballots for the presidential race after the Gwadabawa polling station closed in Yola, Nigeria, Saturday Feb. 23, 2019. Incumbent President Muhammadu Buhari is facing opposition presidential candidate Atiku Abubakar in the presidential election. (AP Photo/Sunday Alamba)
A woman voter verifies her voter registration before casting her vote at a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)
A woman voter verifies her voter registration before casting her vote at a polling station in Kano, northern Nigeria Saturday, Feb. 23, 2019. Nigerians are going to the polls for a presidential election Saturday, one week after a surprise delay for Africa's largest democracy. (AP Photo/Ben Curtis)