I don’t have a problem with him running negative ads. He needs to stop whining about it. You don’t see any other candidate complaining do you? If he really wanted to hurt Romney he’d get out of the race and endorse Santorum.
Newt would be ahead if, instead of calling other candidates liars, he would point out the positive about himself and the negative about B. Obama. People are most concerned about choosing somebody who can beat B. Obama.