Recently Romney explained some of the differences between himself and the other two leading GOP contenders for the 2008 nomination:

In an interview with The Examiner, Romney described himself as more conservative than Republican rivals McCain, R-Ariz., and former New York Mayor Rudy Giuliani on a variety of issues. “We’re in a different place on immigration; we’re in a different place on campaign reform; we’re in a different place on same–sex marriage; we’re in a different place on the president’s policy on interrogation of detainees,” Romney said.

“I’m a conservative Republican, there’s no question about that,” he said. “I’m at a different place than the other two.”