At which point we can stick a fork in Romney. Via Ballot Box: Newt Gingrich stands to benefit if Herman Cain were to withdraw or lose support in the Republican presidential race, according to a Public Policy Poll released on Tuesday. Gingrich has a much better favorability rating with Cain supporters than does Mitt Romney. … Continue reading Poll: Gingrich Would Pick Up Bulk Of Cain Supporters If He Drops Out…