Newt Gingrich: Mitt Romney’s a liar, isn’t he?

(By Ed Morrissey, Hot Air) - Newt Gingrich is a man of his word after all, or at least the latest version of his word. Initially, Gingrich insisted that he would not “go negative” against his opponents, and even warned third-party PACs to stay positive 'or else'. After getting hammered in Iowa, Gingrich changed his mind last week and decided that he would start “drawing a contrast” in the campaign between himself and Mitt Romney — and did so by accusing Romney of trying to buy the election and calling him a robot. Today, Gingrich decided to 'draw a contrast' by calling Romney a liar: