Democratic presidential candidate former Vice President Joe Biden listens as his running mate Sen. Kamala Harris, D-Calif., speaks during a campaign event at Alexis Dupont High School in Wilmington, Del.

Democratic presidential candidate former Vice President Joe Biden listens as his running mate Sen. Kamala Harris, D-Calif., speaks during a campaign event at Alexis Dupont High School in Wilmington, Del., Wednesday, Aug. 12, 2020. (AP Photo/Carolyn Kaster)