@wallstreetjournal: Democratic socialist Zohran Mamdani was poised to deliver a stunning upset in New York City’s mayoral primary that pitted youthful enthusiasm against Andrew Cuomo’s billionaire backers, union endorsements and old-guard Democratic support. Mamdani raced to an early lead in the Democratic primary shortly after polls closed at 9 p.m. Tuesday, racking up more than 43% of the vote with roughly 90% of ballots counted. The official outcome of the race is still to be determined by a ranked-choice vote count. #politics #wsj