Former President Barack Obama speaks at a rally while campaigning for Democratic presidential candidate former Vice President Joe Biden Tuesday, Oct. 27, 2020, in Orlando, Fla. (AP Photo/John Raoux)

Democratic presidential candidate former Vice President Joe Biden arrives to speak at a rally at Belle Isle Casino in Detroit, Mich., Saturday, Oct. 31, 2020, which former President Barack Obama also attended. (AP Photo/Andrew Harnik)

FILE - In this Nov. 27, 2018, file photo, Stevie Wonder performs live at a news press conference for the "House Full of Toys 22nd annual Benefit Concert" in Los Angeles. Stevie Wonder is back in his home state of Michigan to get out the vote for Joe Biden, Saturday, Oct. 31, 2020. “The only way we’re gonna win this fight, a fight against injustice, is by voting,” he told a crowd gathered at a drive-in rally in Detroit. (Photo by Willy Sanjuan/Invision/AP, File)

President Donald Trump speaks at a campaign rally at Keith House, Washington's Headquarters, Saturday, Oct. 31, 2020, in Newtown, Pa. (AP Photo/Alex Brandon)