Joe Biden introduces Kamala Harris as his running mate in Wilmington, Del. (Getty Images)
Joe Biden and Kamala Harris. (Carolyn Kaster / Associated Press)
The candidates arrived wearing masks. (Drew Angerer / Getty Images)
Harris and her husband, Douglas Emhoff, right, applaud Joe Biden and his wife, Jill. (Carolyn Kaster / Associated Press)
Taking the stage. (Carolyn Kaster / Associated Press)
Harris and her husband greet Jill Biden. (Carolyn Kaster / Associated Press)
Harris and husband Douglas Emhoff. (Carolyn Kaster / Associated Press)
Joe Biden speaks during the campaign event. (Carolyn Kaster / Associated Press)
Kamala Harris speaks. (Carolyn Kaster / Associated Press)
The candidates on TV monitors in the media briefing room at the White House. (Andrew Harnik / Associated Press)
Joe Biden listens as his running mate speaks during the campaign event. (Carolyn Kaster / Associated Press)
Harris listens as Biden speaks. (Carolyn Kaster / Associated Press)
Joe Biden supporters outside the event in Wilmington, Del. (Carolyn Kaster / Associated Press)