Is Rick Santorum the New Republican Front-Runner?

New poll shows the former senator threatening to pull ahead of Romney.
3:04 | 02/14/12

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Transcript for Is Rick Santorum the New Republican Front-Runner?
Latest dramatic twist in the race for the Republican nomination new poll showed that we may have a new front runner Rick Santorum has all the momentum now. Pulling up to Mitt Romney nationwide and moving. In the stay within Netscape contest it's your voice your vote anyway she's John Berman as it would then Jon those winds -- -- -- -- worked like a booster rocket for Rick Santorum. You know it's not only the national polls George but just as perilous for team Romney right now the campaign believes it could be trailing in the governor's home state of Michigan. So. On this Valentine's Day Mitt Romney might very well be asking Republican voters in the immortal words of the supremes baby baby baby where did our love go. And gentlemen -- -- the -- Republican front runner but -- -- Rick Santorum overnight in Washington. The ending up protesters but soaring in the pools. One brand new national poll Santorum needs Romney by two points in -- second poll he's jumped fourteen points in less than a week. What's more Santorum leads Romney in three crucial Republican groups Tea Party years conservatives and evangelicals. On this Valentine's Day the Romney team knows the need to do something to help voters rediscover the low ball boy. Overnight to a packed house of Arizona a relentless repeated defense of these conservative record. And -- -- I think about conservatism my conservatism the principles of conservatism great conservative scholars. He picked up wins in Maine with a conservative straw poll in DC this weekend but there are people asking students to vote what's more -- knowledge that as of now we couldn't trampling initially did. Where Romney was born in -- father was governor so how to rekindle -- voter romance planned one. By beloved son he has a huge financial advantage over his opponent's supporters are dumping money into ads in Michigan and other states. -- in -- has raised more than three. It for Romney money can't buy you love plan to beat the heck out of everyone else's show with fresh -- Santorum like his veiled jab about his lack of executive or use this experience it's not nominate -- US what they had a stab at a later -- -- give a sense of his response on this week. You reach a point we're desperate people do desperate things. And going negative on Santorum does have risks the Romney team believes he's a tougher target than Newt Gingrich less likely to have big gaps. In Romney's numbers with independents who might react badly in negative campaigns have been slipping as for Santorum he is making a fight of this he launches his first ads in Michigan George today he's -- some help from the major conservative magazine overnight and -- -- calling on Newt Gingrich to get out of the race to clear the path of Santorum -- overnight -- says he's not about to do that but he does acknowledge he does need to change strategy in this campaign. Which -- it is fairly obvious at this point OK John -- thanks very much.

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

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