Imagine that the NFL made a rule change that allowed every team to have an extra three men on the field during the game — but half of the NFL teams, protesting the new rule as “wrong” and “too much of a deviation from fairness and norms” refused to add the three players to their own lineups. Who’d be winning almost every game? Who’d be going to the Superbowl? This is an almost perfect analogy to what Democrats are doing today with electoral politics. In 2013, five corrupt Republicans on the Supreme Court changed the rules for our elections, gutting...