Kamala Harris won't save Democrats unless the party unites behind her, says historian who correctly predicted 9 of the last 10 elections

Allan Lichtman, a historian who predicted the last nine out of 10 elections, said Kamala Harris could only help Democrats if Joe Biden stepped down from the presidency now.

Kent Nishimura / Los Angeles Times and Andrew Harnik/Getty Images

• 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.