When a prominent Democrat has lost Chuck Todd, the handwriting is on the wall. Three days ago, I predicted that Alexandria Ocasio-Cortez was sealing her fate when she took (and probably deserved) credit for killing the deal that would have brought 25,000 high-paying Amazon jobs to New York City. It's not that the young woman with boundless self-confidence in her views has no clue about how tax incentives work (though that is obviously true, since she crowed that the $3 billion in tax abatements could be spent on subways, schools, and the like). Ignorance and simple-mindedness are no obstacles to a Democrat winning...