When Newt Gingrich got humiliated three weeks ago in Iowa, he responded the way any self-respecting political scrapper would after being beaten down and bloodied. He got up and started swinging wildly. Not just at the guy who knocked him out, but at any foe (hello media elite!) who dared come within reach. Contrast that with Mitt Romney, a candidate so scripted and disciplined even his one-liners in TV debates sound poll-tested and focus grouped. “I will show passion and, from time to time, perhaps a little energy — as I feel it in my heart,” Romney said on the...