The “internecine aggression” might not hurt him too much. My Florida voter (Lee County) says:
I voted for Romney because he finally fought back. Instead of being Mr. Nice Guy, Mr. Marshmallow, Mr. Walking on Eggs (like last week in SC), he fought back, finally. The fight was first started by Gingrich on the media. Then he started on Romney and the others. This entire weekend, Gingrich has been crying that Romney isn’t telling the truth, etc., etc. Well, Romney did what Gingrich wanted — released his taxes. In doing so, there has to be some sort of quid pro quo — for Gingrich it was giving up FL.