In the past couple of weeks, ever since the Fox News GOP debates (yes, plural, there was the "kiddie table" debate with Perry, Fiorina, and Jindal, among others), there is one name on the GOP side who has dominated not only the airwaves, but most of the time and efforts of the punditocracy. Donald Trump. He arouses wild excitement, and withering contempt; he is an object both of fear and of hope; and his support, like his opposition, comes from all demographic groups, many different political backgrounds, and is not limited to any one state or geographic region. He is,...