Joe Crowley didn’t see it coming. No one did, really. In the biggest upset of the 2018 elections so far, the chair of the House Democratic caucus lost his primary race on Tuesday to Alexandria Ocasio-Cortez, a 28-year-old activist who rode an insurgent campaign to an unlikely victory. The Associated Press called the race Tuesday night with the Bronx-born Ocasio-Cortez, a member of the Democratic Socialists of America, leading 58-42, with 88% of the precincts reporting. The upset was a stunning blow for Crowley, a 10-term congressman and New York political machine boss who was viewed as a possible successor to Democratic Leader Nancy Pelosi. But it was also a clear marker of the energy on the far left at the moment.