...For the last eight months, the sophisticated view of Trump and Trumpism has gone something like this: Donald Trump may be a huckster, but he has done a service to the Republican party by bringing new, nontraditional voters into the tent. He has shown his fellow candidates that they can flatly reject the demands of political correctness and need not drop into turtle-guard whenever the New York Times takes a shot at them. And while Trump the man is not presidential material, Trumpism -- that is, the collection of populist and nationalist concerns that have become wrapped up in the...