Former President Bill Clinton says Tuesday will mark a "change election".
Speaking on behalf of his wife at a star-studded rally in Philadelphia on Monday night, he said voters have to decide whether "we are going to change forward together or backward".
He also said Hillary Clinton has "lived her life dedicated to making changes for other people".
Hillary's daughter Chelsea, President Barack Obama, first lady Michelle Obama and singers Bruce Springsteen and Jon Bon Jovi also appeared at the rally.
