The 2016 election is over, and the reckoning has now begun. Donald J. Trump’s ascent to the presidency will go down as one of the greatest political upsets in history. How did he do it? How did so many scholars and political professionals underrate his prospects so badly? And what does his presidency mean for America’s future? The Chronicle Review has assembled a collection of essays on the president-elect from our pages in an attempt to make sense of this historic election.