Biden, Trump prep for presidential debate that will highlight mental fitness

ET on Thursday (0100 GMT on Friday), will be the earliest presidential debate in modern U.S. history and a critical event for both candidates. Biden, 81, and former president Trump, 78, are neck-and-neck in national opinion polls, with a considerable slice of the electorate still undecided five months before the Nov. 5 vote. The debate will provide the starkest contrast yet of the two men, the oldest candidates ever to seek the U.S. presidency, as voters question their age and mental sharpness. Independent candidate Robert F. Kennedy Jr. didn't make the cut, so Biden, a Democrat, and Trump, a Republican, won’t have to worry about him. A campaign spokesperson declined to comment on whether former White House counsel Bob Bauer would reprise the role of Trump he played during debate prep in 2020.