Of course the Democrats are still mad for Beto: He is who they are. Some of my conservative friends are mystified by the apparently enduring appeal of Robert Francis O’Rourke, a.k.a. “Beto,” the faux-Hispanic progressive from El Paso who failed to unseat conservative stalwart Senator Ted Cruz in spite of a flood of money and a tsunami of media adulation. “He lost, didn’t he?” they ask, perplexed. There is an answer to this riddle: snobbery. The Democratic party is the political home of snobbery, a word and a concept often misunderstood. Snobbery does not refer to the cultivated preferences of...