Newt Gingrich is refuting new attacks about his role at mortgage giant Freddie Mac. Gingrich's reflection is seen here as he walks out mirrored doors in Tampa, Fla. to deliver remarks and greet supporters on Jan. 23. PAUL J. RICHARDS/AFP/Getty Images hide caption

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A voting regulations sign is displayed at the Shandon Fire Station in Columbia, S.C., on Saturday. Win McNamee/Getty Images hide caption

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'Dirty' Politics As Usual In South?

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GOP Primary Campaign Inundates South Carolina TV Viewers

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Todd Palin attends the Iowa State Fair August 12, 2011 in Des Moines, Iowa. Chip Somodevilla/Getty Images hide caption

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Celebrity Endorsements: What Happens When Reality TV And Politics Collide

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