(Newser) – As Mitt Romney heads to New Hampshire following his razor-thin win in Iowa, he can expect an endorsement from the man who trounced him there four years ago. John McCain plans to endorse Romney and will travel with him on his campaign bus through the state, a campaign insider tells the New York Times. Romney endorsed McCain after dropping out of the race in 2008.

Rick Santorum—who endorsed Romney in 2008, as a way, he said this week, to stop McCain's bid for the nomination—said that while McCain is a great man with whom it was an honor to serve in the Senate, he was surprised that the Romney endorsement hadn't come sooner. "John is a more moderate member of the Republican team, and I think he fits in with Newt's—excuse me, with Mitt's—view of the world," he told CNN.