When Rep. Alexandra Ocasio-Cortez (D-N.Y.) stepped onto the Democratic National Convention stage in Chicago on Monday night, the crowd erupted in chants of “A-O-C.” The 34-year-old’s speech electrified the room of Democrats, representing a dramatic shift from when the congresswoman from Queens first entered the scene in 2019 as an outsider and challenger to the party establishment—a democratic socialist who unseated 10-term incumbent Rep.