OK, so that just happened. Donald Trump always enjoyed massive support from uneducated, low-information white people. As Bloomberg Politics reported back in August, Hillary Clinton was enjoying a giant 25 percentage-point lead among college-educated voters going into the election. (Whether that trend held up remains to be seen.) In contrast, in the 2012 election, college-educated voters just barely favored Barack Obama over Mitt Romney. Last night we saw something historic: the dance of the dunces. Never have educated voters so uniformly rejected a candidate. But never before have the lesser-educated so uniformly supported a candidate. Trump supporters might retort: “That’s...