Here’s how Donald Trump sabotaged the Republican midterms

Hey, Lyin’ Ted and Sleepy Joe: Meet Toxic Trump. You know, if the former president had any self-knowledge or even the slightest ability to be self-deprecating, he might consider giving himself this alliterative nickname.

After three straight national tallies in which either he or his party or both were hammered by the national electorate, it’s time for even his stans to accept the truth: Toxic Trump is the political equivalent of a can of Raid.

What Tuesday night’s results suggest is that Trump is perhaps the most profound vote repellent in modern...