In a major upset, Alexandria Ocasio-Cortez, a 28-year-old Latina democratic socialist from the Bronx, beat out the longtime US representative Joe Crowley in the New York primaries. In the overwhelmingly Democratic district, she is practically certain to win a seat in Congress during the general election in November. Ocasio-Cortez’s climate-change platform would become the most progressive of that of any sitting Congressperson in the Democratic party—and her primary victory catapults that platform into the mainstream.