Here’s the thing about primary elections in the Land of Lincoln and, especially in the Democratic stronghold that is the city of Chicago: In race after race, they are not the appetizer course but the entire prix fixe. The whole kit and caboodle. By Wednesday, the determination of our collective destiny will be all over, bar the shouting. The general election in November? It might matter in the race for Illinois governor and in a select few statehouse contests. But in most of the races in which we’ve been endorsing these last several weeks, the winner of the primary will...