Christie really is one of the Republicans' best choices here. He has the right kind of temperment, and frankly, he'd fill a void -- Republicans have no candidate they can get excited about who is actually electable.
The only question -- experience. Will the public be okay electing someone with only three years' experience in the executive? Will his time as U.S. Attorney count as "experience?"
True, if only Christie has a few years as a community organizer of something under his belt I would feel much better about his candidacy.