Newt Gingrich

Associated Press
Republican presidential candidate, former House Speaker Newt Gingrich, follows his wife Callista as they walk off stage after he announced that he is suspending his presidential campaign, Wednesday, May 2, 2012 in Arlington, Va.  (AP Photo/Evan Vucci)

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Republican presidential candidate Newt Gingrich took to the podium in a Las Vegas honky-tonk bar to slam Mitt Romney ahead of the Feb. 4 primary in Nevada.

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