Newt's the Washington insider of insider's, been down there for fourty years and is helping ensure Obama's re-election with his negative attack's against Mitt and other Republican's.
Gingrich is a "narcissist" and I would never vote for him period, I'll stay home if he gets the nomination (but not worrying because he won't.) If you want Obama for four more years nominate Gingrich, he is a sure loser with alot of skeleton's in the closet which Obama will have a field day with !
Mitt is the most "electable" and despite what Gingrich says Romney is conservative on most issues, more conservative than John McCain.

Remember Reagan's 11th Commandment ie. "not to attack another Republican".