he's not going to have that problem tonight. he'll be literally in the center of the stage. it's fitting. he'll be right next to mitt romney. one is against mitt romney. the other is that battle for the anti-romney. that's where rick santorum is in the center of that debate. >> this audience will be slightly more intimate. 200 fewer seats than the last debate. make no mistake, candidates talking to new hampshire. but south carolina too. >> the new hampshire primary is this tuesday. south carolina primary, january 21st. every one of these candidates want to use that as a firewall to stop mitt romney. >> mitt romney hopes they all get a piece of the pie and splinter the vote in south carolina. >> that's right. there's six candidates. that's a great thing. he's trying to make sure the anti-romney candidates don't coalesce behind a single candidate. >> insider look at the debate. >> when we come back you'll get all access look at the campaign. our cameras rolling even after "world news" comes to an end. and what that feels like.