Romney leads, Santorum surges in new Iowa poll

Mitt Romney has claimed a narrow lead over Ron Paul in Iowa, according to a new CNN/Time poll. But it is Rick Santorum who may be showing the most momentum with just days left before the caucuses.

Much of the movement is driven by a collapse in support for Newt Gingrich. He led the previous CNN survey in Iowa with 33% support, well ahead of Romney at 20% and Paul at 17%.

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