GOP presidential debate in Iowa (15 images)

Updated: Dec. 16, 2011 at 9:47 AM
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Republican 2012 presidential candidate and former House Speaker Newt Gingrich signs an autograph with his wife Callista at his side at the conclusion of the GOP debate in Sioux City, Iowa, December 15, 2011, in advance of Iowa's first-in-the-nation caucuses, January 3, 2012. UPI/Mike Theiler
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