Newt Gingrich

Associated Press
Republican presidential candidate, former House Speaker Newt Gingrich paues after a being a guest on a radio interview in the Hollywood Diner in Dover, Del., Thursday, April 12, 2012. (AP Photo/Patrick Semansky)

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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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