A close and — to pundits, journalists, and Democrats — unexpected victory like Republican presidential candidate Donald Trump’s is always overdetermined, and no one particular thing pushed Trump over the edge on Tuesday night. His chosen party’s lately increasing openness to explicit white nationalism, the still-recent global-scale failure of the liberal economic consensus, the apparently deep-seated misogyny and racism of the American electorate, Hillary Clinton’s multiple shortcomings as a candidate, or even the last-minute intervention of FBI director James Comey might each have been, on its own, sufficient to hand the election to a man who is, by any reckoning,...