Karl joins The O'Reilly Factor to discuss the upcoming presdiential primaries and caucuses. How will the Republican field be affected given that only one state - South Carolina - will award delegates as "winner take all" before the Ides of March?
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On CBS' "Face the Nation," authors Doris Kearns Goodwin, Karl Rove, Jon Meacham, and Edward Larson discuss their newly released biographies on former U.S. presidents who have left their mark on history.
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