Zohran Mamdani was poised to deliver a stunning upset in the New York City’s mayoral primary that pitted youthful enthusiasm against Andrew Cuomo’s billionaire backers, union endorsements and old-guard Democratic support.

Zohran Mamdani declared victory in New York City’s Democratic mayoral primary Tuesday night after Andrew Cuomo conceded the race in a stunning upset, as the young, progressive upstart who was virtually unknown when the contest began built a substantial lead over the more experienced but scandal-scarred former governor.

State Assemblyman Zohran Mamdani is the leader as first-choice votes are tallied in the New York City Democratic mayoral primary, ahead of former New York Gov. Andrew Cuomo, who declared his rival the winner even though no candidate is set to secure a majority in the first round of the ranked choice election.