Oh good lord, let this be the limits of his charisma. Let the GOP only be pushing him so hard because 'Well, people seem to like the ethnic thing after all, and we do have this one guy...'. Let them never stop pushing him.
I just want them to keep pushing crazy, hard-line Republicans like Jindal and Palin and only offer the alternative of "moderate" Republicans who will have to sound crazy and hard-line to get elected by the crazy, hard-line Republican base.
Because that's how you win votes: by alienating people with actual brain cells.