. >>> sean ellsburg will be talking to us about that later, but first, republicans this morning running for president have been mixing it up on live television. >> susan is live in concord to tell us what they said and whether the front-runner mitt romney has emerged unscathed. >> hi, the second debate of the week. last chance for the republican rivals to try to take away some of the leads. just ended. some of the protesters and supporters are still around, but for the most part, it's getting quiet around here. inside, a more combative tone to the debate compared to before. a lot more intense exchanges. they really needed to because it was the last chance to get voters before primary on tuesday. mitt romney has a double digit lead. >> why didn't you run for reelection? >> can we stop the pious? >> reporter: just two hours after sharing a stage in manchester, they went at it again this morning. >> you have a surprised look t on your face. >> reporter: romney tried to keep the attention on president obama. >> we need to have a leader to replace someone who's not a leader. >> reporter: thi