Jennifer Rubin lays out the perfect Republican candidate who is, not coincidentally, the Un-Obama:

Republicans need to find the grown-up who is both tough and appealing (the two often don't go hand in hand). The unserious and the irresolute need not apply. And oh, by the way, the same seriousness of purpose candidates display on fiscal matters, coupled with their ability to delineate the bad and good guys in the world (and be candid about the fact that there are good and bad actors), may give us some indication how they are going to conduct foreign policy.