Pfizer Vaccine 90% Effective, Election Latest & More — Monday's Rundown: Nov. 9

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Pfizer says its coronavirus vaccine proved to be 90% effective, President Trump plans to host more campaign rallies as he launches a legal fight to challenge the election results, and celebrities and "Jeopardy" contestants remember late host Alex Trebek. These are the stories making headlines on Nov. 9, 2020.

Pfizer Vaccine 90% Effective, Election Latest & More — Monday's Rundown: Nov. 9