todd is nbc news political director and chief white house correspondent. he joins us now from tampa, florida, site of tomorrow night's nbc news presidential debate. you see the set there behind h m him. chuck, let me ask you how the debates may have hurt romney in south carolina and how you expect him to change, perhaps, when he goes back on the podium tomorrow. >> well, it is interesting we do sort of -- mitt romney telegrafd he'll get more aggressive against speaker gingrich. speaker gingrich has shown his ability to be aggressive with the moderate, a little bit with his opponents. it will be interesting to watch romney do this. four years ago, almost in this exact same period in the presidential race, he was feeling the pressure from huckabee and mccain, romney went on the attack and his numbers went down even lower. in fact, at the florida debates then he was very aggressive and it didn't help him. he struggles walking that line of going on the attack and at the same time without turning off voters and newt gingrich is somebody that knows he lives for these moments. he knows how to respond and sort of get under mitt romney's skin in a way that we haven't seen in a while, l