Biden has been using notecards in closed-door fundraisers, calling on prescreened donors and then consulting his notes to provide detailed answers, according to people familiar with the routine.
Storyboard
Why Biden's reliance on notecards has donors worried
Biden's reliance on notecards to help explain his own policy positions — on questions he knows are coming — is raising concerns among some donors about Biden's age.
The big picture
The staged Q&A sessions have left some donors wondering whether Biden can withstand the rigors of a presidential campaign, let alone potential debates with Trump, 77.
Between the lines
Both Biden and Trump — but especially Biden — are facing questions about their age in a campaign that's likely to feature the oldest presidential finalists in U.S. history.
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