Former President Barack Obama addresses Joe Biden-Kamala Harris supporters during a drive-in rally Wednesday in Philadelphia.

Former US President Barack Obama addresses Biden-Harris supporters during a drive-in rally in Philadelphia, Pennsylvania on October 21, 2020. – Former US president Barack Obama hit the campaign trail for Joe Biden today in a bid to drum up support for his former vice president among young Americans and Black voters in the final stretch of the White House race. (Photo by Alex Edelman / AFP) (Photo by ALEX EDELMAN/AFP via Getty Images)