Newt Gingrich

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Republican presidential candidate and former House Speaker Newt Gingrich speaks as his wife Callista, right, looks on during a South Carolina Republican presidential primary night rally, Saturday, Jan. 21, 2012, in Columbia, S.C. Newt Gingrich won the South Carolina primary. (AP Photo/Matt Rourke)

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Republican presidential candidate and former House Speaker Newt Gingrich speaks during a South Carolina Republican presidential primary night rally, Saturday, Jan. 21, 2012, in Columbia, S.C. Newt Gingrich won the South Carolina primary. (AP Photo/Matt Rourke)

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Republican presidential candidate and former House Speaker Newt Gingrich takes part in a TV interview during a campaign event at the Grapevine Restaurant in Spartanburg, S.C., on Saturday, Jan. 21, 2012, the unpredictable voting day of the South Carolina presidential primary. (AP Photo/Matt Rourke)

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Republican presidential candidate, former Massachusetts Gov. Mitt Romney, gives a thumbs up during his campaign stop at Tommy’s Country Ham House, where former House Speaker Newt Gingrich also scheduled an appearance, on South Carolina's primary election day in Greenville, S.C., Saturday, Jan. 21, 2012. (AP Photo/Charles Dharapak)

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Republican presidential candidate, former Massachusetts Gov. Mitt Romney, is accompanied by his wife Ann, right, as he campaigns outside Tommy’s Country Ham House, where former House Speaker Newt Gingrich also scheduled an appearance, on South Carolina's primary election day in Greenville, S.C., Saturday, Jan. 21, 2012. (AP Photo/Charles Dharapak)

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Republican presidential candidate and former House Speaker Newt Gingrich (left) and his wife, Callista (right), talk Jan. 20, 2012, with press secretary R.C. Hammond before addressing reporters following a town hall meeting at the Cinema Room in Orangeburg, S.C. (Andrew Harnik/The Washington Times)

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Republican presidential candidate and former House Speaker Newt Gingrich greets supporters after a town hall meeting Jan. 20, 2012, at the Cinema Room in Orangeburg, S.C. (Andrew Harnik/The Washington Times)

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Security for Republican presidential candidate and former House Speaker Newt Gingrich stand in a side doorway as Gingrich addresses a town hall meeting Jan. 20, 2012, at the Cinema Room in Orangeburg, S.C. (Andrew Harnik/The Washington Times)

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Supporters of Republican presidential candidate and former House Speaker Newt Gingrich listen as he addresses a town hall meeting Jan. 20, 2012, at the Cinema Room in Orangeburg, S.C. (Andrew Harnik/The Washington Times)

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Republican presidential candidate and former House Speaker Newt Gingrich addresses a town hall meeting Jan. 20, 2012, at the Cinema Room in Orangeburg, S.C. (Andrew Harnik/The Washington Times)

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Republican presidential candidate and former House Speaker Newt Gingrich addresses a town hall meeting Jan. 20, 2012, at the Cinema Room in Orangeburg, S.C. (Andrew Harnik/The Washington Times)

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Republican presidential candidate and former House Speaker Newt Gingrich addresses a town hall meeting Jan. 20, 2012, at the Cinema Room in Orangeburg, S.C. (Andrew Harnik/The Washington Times)

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Republican presidential candidate and former House Speaker Newt Gingrich listens Jan. 20, 2012, to staff during a visit to Children's Hospital in Charleston, S.C. (Associated Press)

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Republican presidential candidate and former House Speaker Newt Gingrich reacts Jan. 19, 2012, to a question at the start of the Republican presidential candidate debate at the North Charleston Coliseum in Charleston, S.C. (Associated Press)

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** FILE ** Republican presidential candidates, former Massachusetts Gov. Mitt Romney and former House Speaker Newt Gingrich share a laugh during a commercial break at the Republican presidential candidate debate at the North Charleston Coliseum in Charleston, S.C., Thursday, Jan. 19, 2012. (AP Photo/David Goldman)

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Former Massachusetts Gov. Mitt Romney (left) makes a point as former House Speaker Newt Gingrich listens during the Republican presidential candidate debate at the North Charleston Coliseum in Charleston, S.C., on Thursday. (Associated Press)

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Republican presidential hopefuls (from left) Rick Santorum, Mitt Romney, Newt Gingrich and Ron Paul take the stage Jan. 19, 2012, for the Southern Republican Presidential Debate at the North Charleston Coliseum in Charleston, S.C. (Andrew Harnik/The Washington Times) **FILE**

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Former House Speaker Newt Gingrich, a Republican presidential candidate, arrives to speak at a Lowcountry Sportsmen BBQ in Walterboro, S.C., on Thursday. He called welfare reform "the most successful entitlement reform in your lifetime." (Andrew Harnik/The Washington Times)

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Republican presidential candidates, former Massachusetts Gov. Mitt Romney and former House Speaker Newt Gingrich participate in the Republican presidential candidate debate at the North Charleston Coliseum in Charleston, S.C., Thursday, Jan. 19, 2012. (AP Photo/David Goldman)

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Former House Speaker Newt Gingrich, a Republican presidential candidate, arrives to speak at a Lowcountry Sportsmen BBQ in Walterboro, S.C., on Thursday. He called welfare reform "the most successful entitlement reform in your lifetime." (Andrew Harnik/The Washington Times)