This is a very, very hard thing for me to write. After all, I’m the guy who (for 30 days, anyway) changed my longtime voter registration from independent to Democrat just so I could vote for Sanders in the Pennsylvania primary. Here’s what I wrote, specifically, in the spring of 2016: “On April 26, I am going to vote for Vermont Sen. Bernie Sanders as if my life depended on it. It’s just that important.” The previous fall, with the cadences of the late, great Hunter S. Thompson ringing in my ears, I’d followed Sanders around the country and talked to scores of his supporters to produce an e-book that tried to capture the revolutionary fervor of his movement.