Editor's note: In the newest poll, Romney is in the lead, Rick Santorum rose to third place and Newt Gingrich's slid to fourth. Expert analysis on what this means six days before the Iowa caucus on AC360 at 8 and 10 p.m. ET.
Des Moines, Iowa (CNN) – Did Newt Gingrich peak too early?
A new survey of people likely to attend Iowa's Republican caucuses indicates that the former House speaker's support in the Hawkeye State is plunging. And according to a CNN/Time/ORC International Poll, one-time long shot candidate Rick Santorum has more than tripled his support since the beginning of the month.
Twenty-five percent of people questioned say if the caucuses were held today, they'd most likely back Mitt Romney, with 22% saying they'd support Rep. Ron Paul of Texas. Romney's three point margin is within the poll's sampling error.
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