New Iowa Poll Shakes Up the GOP Race

Ann Selzer breaks down the findings from a new Des Moines Register/Bloomberg Politics Iowa poll.
2:05 | 12/13/15

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Transcript for New Iowa Poll Shakes Up the GOP Race
the voters of the state may not be the best way to win them over. Let's get more on this from Ann Selzer, you have polling in Iowa for decades. Your poll has had a strong track record. Have you seen a surge like this? You know, we went and looked back at the last five caucus cycle, trying to see if we have seen a jump this big, we have never seen a spike like this for a candidate. You know, trump has actually gone up, not just as much as Cruz, so Cruz -- is his play nice strategy, is that paying off? What else is behind this surge? Well, the play nice strategy may be paying off, he's also doing the groundwork with the evangelical conservative community. He got some key endorsements in the past week, and it may be he's that candidate that people look for to coalesce around. You got Numbers behind the Numbers. They really show how strong Ted Cruz is doing. It's something called the Selzer index. The Selzer score. And we created it because the field is so big, but just looking at the horse race didn't give enough information about potential for candidates to get stronger. Than they would appear in that horse race. Ted Cruz's number is huge in our Selzer score. And what that shows is that, he may not have hit his ceiling yet, there are more upside, more people who would be a good second choice if they're not his first. And there's a large group of people they would see him supporting that. We add that together with the index, we call that Selzer score. What happened to Ben Carson? Ben Carson has just sort of rolled down a hill, it seems, he didn't have a strong debate performance, things turned to foreign policy, he's just not one of the people that people can find a strength to hold on to that makes him stronger than Cruz on any of the measures that we took a look at. Okay, an Selzer, thank you for coming in this morning. Fascinating poll.

This transcript has been automatically generated and may not be 100% accurate.

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