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This, especially if he's second to santorum, then i think that it's unpredictable what happens after that. everybody thinks, well, santorum will just go away. coming in second to santorum would be a sign of weakness. coming in second to paul would not be so much as a sign of weakness as coming in second to santorum. >> david gergen, thank you. still ahead, more on the santorum surge, whether it has crested or not. former pennsylvania senator has gained major momentum in iowa in the last couple days. also ahead, crime and punishment tonight, a four-day arson spree in los angeles seems to be o...

caucuses it starts counting. republicans will start choosing candidates in a campaign after everyone you see here and a few you don't, have been the front-runner or the front-runner -- or may soon become the front-runner. some of these boxes may soon be empty. politico's roger simon said iowa caucuses don't pick winners, they eliminate losers. a lot of people could continue on from here even if they don't place well. a loser here may take new hampshire. someone else could win south carolina and yet another may win florida. it's just been that kind of a campaign. the polls here reflec...