Zohran Mamdani was elected Tuesday as New York City’s 111th mayor in a stunning political ascent, becoming the youngest person in more than a century and the first Muslim to hold the post, as he defeated Andrew M. Cuomo, a former governor and scion of a Democratic political dynasty who was once considered unbeatable in the race.

Mamdani was declared the winner at about 9:30 p.m. by The Associated Press. He defeated former Cuomo and Republican Curtis Sliwa.

Supporters at Mamdani’s election night headquarters in Brooklyn erupted in celebration. There was singing, chanting, jumping, hugging and crying.

"He has a great vision, and he has a lot of empathy, and I think that people resonate with him on, like, a human level, which is tough for a lot of politicians," said Aneesh Agrawal, 26, a c

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