Democrats, even liberal ones, will let Ford be whoever he wants to be, for one simple reason: he may deliver them the Senate. Two weeks before the midterm elections, the Democrats' fate lies not in the hands of the party's much-dissected antiwar left but with a handful of careful, calculating centrists like Ford. Just a few months ago, Republicans were heralding Ned Lamont's defeat of Sen. Joseph Lieberman in Connecticut's senatorial primary as the end of the Democratic Party,...