Is It Already Too Late to Stop Bernie Sanders?

At a moment when Americans are feeling more prosperous than they have in years, much of the Democratic party is intent on electing as president a man who has called for a socialist revolution — and those Democrats who see nominating him as a mistake have no idea how to stop him.

Vermont Senator Bernie Sanders essentially tied for first place in the Iowa caucuses last week and has now won the New Hampshire primary. Centrist Democrats disagree with much of his agenda and think his nomination would radically reduce the party’s chances of winning the presidential race in November. But the contests so far have done more to consolidate the party’s left wing behind Sanders than to resolve the muddle among those centrists.