A sign for Freddie Mac in front of its headquarters in McLean, Va. Alex Wong/Getty Images hide caption

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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

itoggle caption PAUL J. RICHARDS/AFP/Getty Images