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Down the line? will the attacks hurt romney in south carolina and florida? and i think you have to weight that potential against the unprecedented momentum romney would have coming out of iowa and new hampshire as a winner, and also the ugliness of looking like the attack dog, the mean newt effect, that you don't look appealing when you're going after somebody so hard. >> all right. let's take a listen to newt talking to nbc's david gregory about romney. >> the fact is, president obama is going to have a very hard re-election effort. but i do think the bigger the contrast, the bolder ideas, th...

candidates looked to score of course some last-minute points. they took part in two debates in less than 12 hours. >> the person who should represent our party running against president obama is not someone who called him a remarkable leader and went to be his ambassador in china. >> this nation is divided, david, because of attitudes like that. [ applause ] >> we want someone when the time gets tough, and it will in this election, we want someone who is going to stand up and fight for the conservative principles, not bail out and not run, and not run to the left of ted kennedy. >> c...