Charleston, South Carolina (CNN) - With three days to go until the first-in-the south primary, Mitt Romney remains in the lead in the Palmetto State, but according to a new poll, his advantage over Newt Gingrich is rapidly shrinking.
A CNN/Time/ORC International poll indicates that 33% of likely South Carolina Republican primary voters say they are backing Romney, with 23% supporting Gingrich. The former Massachusetts governor's 10 point advantage over the former House speaker is down from a 19 point lead two weeks ago. According to the survey, former Sen. Rick Santorum of Pennsylvania is at 16%, Rep. Ron Paul of Texas is at 13%, and Texas Gov. Rick Perry stands at 6%.
Tune in Thursday at 8 p.m. ET for the CNN/Southern Republican Presidential Debate hosted by John King and follow it on Twitter at #CNNDebate. For real-time coverage of the South Carolina primary, go to CNNPolitics.com or to the CNN apps or CNN mobile web site.
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The survey was released Wednesday, on the eve of a CNN-Southern Republican presidential debate, the final showdown for the candidates before Saturday's primary, the third contest in the primary and caucus calendar. And the poll came on the same day that Romney and his campaign appeared to step up their attacks on Gingrich.
"Gingrich appears to be the only candidate with momentum as the race in South Carolina enters the final few days," says CNN Polling Director Keating Holland. "Support for Romney and Santorum appears to be slipping, and Paul and Perry seem flat. Gingrich, however, has gained ground and cut Romney's lead in half since early January."
"All of Gingrich's increased support comes among tea party movement supporters, where he's at 31% support, up ten points from early January," adds Holland. "That suggests that Sarah Palin's remarks urging South Carolina voters to choose Gingrich may have a receptive audience."
Among voters who oppose the tea party or are neutral towards it, Romney holds a commanding 30 point lead over Gingrich and the rest of the field of candidates. The survey indicates that born-again Christians are divided, with 26% supporting Romney, 23% backing Gingrich, and 20% saying they'll vote for Santorum. Among those likely primary voters who don't identify themselves as born-again, Romney has a large lead.
Nearly all the interviews were conducted before the Palin's Tuesday night remarks and before Monday night's presidential debate. Most pundits agree that Gingrich had a strong performance at the debate in Myrtle Beach, S.C. At the same showdown, Romney came under attack by his rivals for hedging on whether he would release his tax returns.
The Thursday night CNN debate could further influence South Carolina voters. And with more than four in ten likely primary voters saying that they could still change their minds between now and Saturday, a last minute surge for one candidate or another could materialize.
Florida's GOP presidential primary follows South Carolina's contest by ten days. A CNN/Time/ORC International poll of likely Sunshine State primary voters indicates that Romney still has a commanding lead, with more likely voters in his camp than Santorum and Gingrich combined. According to the survey, which was also released Tuesday, Romney stood at 43%, with Santorum at 19%, Gingrich 18%, Paul 9% and Perry at 2%.
"As in South Carolina, Romney does better among voters who do not support the tea party and those who do not consider themselves born-again Christians. In fact, he finishes second to Santorum among born-again voters," says Holland. "But, as with South Carolina, more than four in ten Florida voters have not made up their minds, and with the all-important South Carolina primary still in the future, the poll does not stand as a prediction of what will happen in Florida."
The poll in South Carolina was conducted for CNN and Time magazine by ORC International from January 13-17, with 505 voters who are likely to vote in the Republican primary questioned by telephone. The survey's overall sampling error is plus or minus 4.5 percentage points.
The poll in Florida was conducted for CNN and Time magazine by ORC International from January 13-17, with 391 voters who are likely to vote in that state's Republican primary. The survey's overall sampling error is plus or minus five percentage points.