Rudy Giuliani is leaving "the door open" for a run for the Republican nomination in 2012 if it looks like no one else can beat President Obama, the Washington Times' Ben Birnbaum reports. The former New York mayor is traveling to New Hampshire next week to talk about law enforcement, and he stays in touch with people there to "try to figure out what kind of a chance I have."

Giuliani was the Republican frontrunner at this point in 2007, but his strategy of skipping early conservative primary states netted him a single electoral vote at the cost of $55 million. On May 12, however, he's playing a bit more to the base, attending an event hosted by the Granite Oath PAC, which was founded by Tea Party favorite Ovide Lamontagne. Further, Giuliani praised Donald Trump as "the most exciting candidate in the race... I know he says some things that are controversial, but I think he does it from the heart." Guiliani added, "I think he is doing as well as he's doing because he's saying things the American people need to hear--about leadership and about strength and about being proud of America and not apologizing for America." Nevertheless, he's not joining in the birtherism of his fellow New Yorker. "It's been proven to my satisfaction that the president was born in the United States. The documented copy [of his birth certificate] is enough for me," Giuliani said.