Usually the guy who’s ahead finds it within himself to be gracious to his competitors whereas the desperate runner-up goes negative and reaches for any stick. So it was peculiar to watch John McCain sneering and slicing his way through the debate with Mitt Romney at the Reagan library. When McCain was given up for dead last summer, he was witty and fun on the stump. Now that he is the frontrunner he is snarky and obnoxious. Dr. Freud, call your office. They say that John McCain harbors a particular dislike for Romney. And why would that be? Well, Romney...