It can’t be said enough:
So how could someone like Mr. Trump have been in striking position for the White House? (He may still be there, since we have yet to see what effect the debate had on the polls.)
Part of the answer is that a lot more Americans than we’d like to imagine are white nationalists at heart. Indeed, implicit appeals to racial hostility have long been at the core of Republican strategy; Mr. Trump became the G.O.P. nominee by saying outright what his opponents tried to convey with dog whistles.
If he loses, Republicans will claim that he was some kind of outlier, showing nothing about the nature of their party. He isn’t.