Newt Gingrich tells CNN's Wolf Blitzer he would consider Mitt Romney to be a potential running mate (VIDEO). The interview is very much in keeping with Gingrich’s “keep it classy” campaign theme so far — and he treaded lightly, sounding neither overly enthusiastic about a VP Romney nor overly displeased with the idea. But why did he take the bait at all? He could just as easily have remained indifferent, have answered with a simple, “I’d have to give it thought.” He won’t win over Romney supporters — and he significantly owes his own surge to the appetite for an...