And I would add that if he had the ability and/or the willingness to play Hardball, and had any killer instinct whatsoever, he would’ve beaten McCain with talk radio and NRO and most conservative outlets coalescing around him.
So skeptical he has the cajones to do this.
Did you pay any attention to the primaries? I was in Iowa visiting relatives before the primaries there in December. Romney went negative with ads before any other candidate did. And, obviously, ran more than any other candidate. That's why McCain and Huckabee hate Willard.