text:  Now, things become harder after that unless the nominee dies or is disabled. Fox's Chad Pergram on Capitol Hill. If the Democratic Party decides to replace the president on the ticket, possible candidates could include Vice President Kamala Harris or California Governor Gavin Newsom. Former President Trump says he does not think President Biden will exit the 2024 race after the incumbent's lackluster debate performance this past Thursday night. America's listening to Fox News.