such a contrast between south carolina and florida, where the audience was so involved in those two south carolina debates. last night it was as if they had muzzles on. >> gingrich took it down a notch. he was slightly more statesman-like self. less the attack dog and romney came out of the box and he did blah he had to do. >> let's show folks what happened. new polling points in a dramatic shift as the republican race for president as the two leading candidates sharpened their lines of attack. according to the latest gallup poll, mitt romney and newt gingrich are in a statistical tie at the top. in a few days romney dropped eight points while gingrich gained 14. ron paul comes in a distant third, followed by rick santorum. with his lead evaporating, the former massachusetts governor got increasingly aggressive at last night's nbc news debate in tampa. romney questioned gingrich's record in washington. leading the former speaker to