Trump vs. Sanders?

MANCHESTER, N.H.—There is no ignoring it now, the American electorate’s disregard for establishment politicians promising incremental change. If the country’s fatigue with the prospect of a Clinton-Bush presidential matchup has hovered above this 2016 race like a latent current of electricity, Tuesday’s New Hampshire results were the long-awaited lightning strike.

Now, in a turn stunning for no one beyond Washington’s political and media elites, America faces the real possibility that Donald Trump and Bernie Sanders could actually battle for the White House in November.