Trump thinks he won a mandate to change America. History says otherwise.

In the wake of President-elect Donald Trump’s victory, a wave of fear and reflection has taken hold across much of America. Much like Trump’s initial 2016 win, when journalists rushed to small-town Ohio diners to gauge what “real America thinks,” there’s a renewed sense that large swaths of experts and elites — not to mention the entire Democratic Party — may be out of touch with the zeitgeist and the electorate.

This feeling isn’t unwarranted, and it’s worth taking t...