Not really. Most McCain supporters seem to buy into the whole "straight-talking maverick war hero who breaks the rules to get the job done" image, which is just as transparent and superficial as Obama's "changehopechangehopechange yes we can!" schtick. Similarly, Huckabee's really playing up the whole "folksy southern preacher who plays the bass and totally hates taxes" thing.
Face it, politics in this country (especially wrt Presidential elections) is based almost completely on a candidate's ability to generate some kind of cult of personality. Obama just happens to be charismatic/smart enough to pull it off on a larger scale than anyone else in the race.