Romney has some thinking to do. He won Massachusetts, where he was a one-term governor, and the Mormon vote, “But he didn’t do anything unusual. If anyone backs out of the Republican race, it’s got to be him,” says James Taylor, a professor of politics at the University of San Francisco. “He has the money to go on, but is there any point? There’s nowhere else for him to win and I can’t see where he can be viable.”