Newt Gingrich

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Republican presidential candidate former House Speaker Newt Gingrich participates 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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Republican presidential candidate former House Speaker Newt Gingrich participates 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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Texas Gov. Rick Perry and his wife, Anita, arrive for a news conference in North Charleston, S.C., on Thursday, Jan. 19, 2012, at which he announced the suspension of his GOP presidential campaign and his endorsement of former House Speaker Newt Gingrich. (AP Photo/David Goldman)

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** FILE ** Rep. Newt Gingrich looks on as his second wife, Marianne, holds up a copy of their book, “Window of Opportunity,” during a news conference on Capitol Hill in Washington in March 1989. (AP Photo/John Duricka)

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Former House Speaker Newt Gingrich shakes hands with supporters while standing with his third wife, Callista, before speaking at Mutt's Barbeque in Easley, S.C., on Wednesday, Jan. 18, 2012. (AP Photo/The Independent-Mail, Nathan Gray)

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Former House Speaker Newt Gingrich, campaigning for the Republican presidential nomination, speaks at the Personhood USA forum in Greenville, S.C., on Wednesday, Jan. 18, 2012. (AP Photo/Paul Sancya)

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Nikki Rinkliff of Easley, S.C., leans in a window to take a photograph of Republican presidential candidate Newt Gingrich on Jan. 18, 2012, after a town hall meeting at Mutt's BBQ in Easley. (Andrew Harnik/The Washington Times)

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Supporters take photos of Republican presidential candidate Newt Gingrich on Jan. 18, 2012, after a town hall meeting at Mutt's BBQ in Easley, S.C. (Andrew Harnik/The Washington Times)

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Republican presidential candidate Newt Gingrich speaks Jan. 18, 2012, at a town hall meeting at Mutt's BBQ in Easley, S.C. At his right is his wife Callista. (Andrew Harnik/The Washington Times)

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Supporters listen to Republican presidential candidate Newt Gingrich speak Jan. 18, 2012, at a town hall meeting at Mutt's BBQ in Easley, S.C. (Andrew Harnik/The Washington Times)

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A young supporter of Republican presidential candidate Newt Gingrich wears a campaign sticker on her forehead as Gingrich speaks Jan. 18, 2012, at a town hall meeting at Mutt's BBQ in Easley, S.C. (Andrew Harnik/The Washington Times)

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Republican presidential candidate Newt Gingrich laughs with a supporter while speaking Jan. 18, 2012, at a town hall meeting at Mutt's BBQ in Easley, S.C. At his right is his wife Callista. (Andrew Harnik/The Washington Times)

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A brightly colored convertible decorated in support of Republican presidential candidate Newt Gingrich sits Jan. 18, 2012, across the street from the Capitol Theatre in Laurens, S.C. (Andrew Harnik/The Washington Times)

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Former House Speaker Newt Gingrich (left), accompanied by his wife, Callista, greets supporters during a GOP presidential campaign stop at the Christ Central Community Center in Winnsboro, S.C., on Wednesday, Jan. 18, 2012. (AP Photo/Pablo Martinez Monsivais)