(Note: We’re on assignment tomorrow, returning Friday.) “So someone said New York values are horrible and then New Yorkers voted overwhelmingly for Hillary and Trump?” quipped Frank Fleming on Twitter last night. Ouch. We say that on behalf of all New Yorkers.

Yesterday’s victory was a milestone for Donald Trump—his first popular-vote majority in a state primary or caucus. That was generally understood to be likely, if not quite a sure thing. But Trump didn’t just exceed 50%, he came very close to, and may top, 60% statewide,...