Newt Gingrich

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Aides confirmed reports that former House Speaker Newt Gingrich, here in Cramerton, N.C., on Wednesday, will drop out of the race for the Republican presidential nomination in the next few days. Mitt Romney scored another five primary victories on Tuesday. (Associated Press)

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** FILE ** In this March 28, 2012, file photo Republican presidential candidate, former House Speaker Newt Gingrich, waits to speak at Georgetown University in Washington. Gingrich is today millions in debt and describing Mitt Romney as "far and away the most likely" GOP nominee. (AP Photo/Haraz N. Ghanbari, File)

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Republican presidential candidate, former House Speaker Newt Gingrich speaks to the media outside the Billy Graham Library in Charlotte, N.C., Tuesday, April 24, 2012. (AP Photo/Chuck Burton)

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**FILE** Republican presidential candidate and former House Speaker Newt Gingrich speaks April 11, 2012, during a visit to the Newark Senior Center in Newark, Del. (Associated Press/The Wilmington News-Journal)

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James Kirchhausen and his dog Major wait April 20, 2012, for Republican presidential candidate and former House Speaker Newt Gingrich to arrive at a campaign stop in Buffalo, N.Y. (Associated Press)

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Republican presidential candidate and former House Speaker Newt Gingrich arrives April 20, 2012, at a campaign stop in Buffalo, N.Y. (Associated Press)

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Campaigning is now a family affair for Newt and Callista Gingrich, who both appear at the annual NRA convention on Friday. (image from Newt.org)

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** FILE ** Republican presidential candidate Newt Gingrich speaks at a public meeting at the Magnolia Volunteer Fire Company on Thursday, April 5, 2012, in Magnolia, Del. (AP Photo/Wilmington News-Journal, Gary Emeigh)

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Republican presidential candidate Newt Gingrich, a former House speaker, speaks to a full house at the University of North Carolina-Wilmington's Lumina Theater in Wilmington, N.C., on Wednesday, April 4, 2012. (AP Photo/The Star-News, Paul Stephen)

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Former House Speaker Newt Gingrich prepares to speak to the Hood College Republicans during a campaign stop at Hood College in Frederick, Md., on Monday. "Gov. Romney doesn't have it locked down. And we have no obligation to back off and concede anything until he does," he said. (Associated Press)

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Former House Speaker Newt Gingrich walks the streets of Annapolis during a visit to the Maryland State House on Tuesday. The Republican presidential hopeful, who has cut his campaign staff, was in the state in advance of the April 3 presidential primary. (Associated Press)