Republicans know they can't win the popular vote. You won't believe sick schemes they've launched to get around it. Republicans have only won the popular vote for president once in the last 25 years, a steep decline in their fortunes from the period from 1972 to 1988, when they won the popular vote every time but one–1976, the aftermath of Watergate. Add to that massive policy failures and demographic trends against them, and the motivations to cheat are overwhelming. Voter suppression seemed promising at first—and it’s helpful in many downticket races—but it’s not going to be enough to secure the...