- President Joe Biden withdrew his candidacy, endoring Vice President Kamala Harris.
- Allan Lichtman, who predicted nine out of 10 elections since 1984, said it could be a bad idea.
- Biden checked off more of the 13 key questions than Kamala Harris, Lichtman told the WSJ.
A professor and historian who successfully predicted the last nine out of 10 elections since 1984 believes Vice President Kamala Harris could secure the presidency if Democrats unite behind her.