Mr. Mamdani’s victory upended city politics and reverberated nationally. He relied on a memorable message, charisma and a strong ground game.

Zohran Mamdani delivered a political earthquake Tuesday in New York City’s Democratic mayoral primary, riding progressive demands for change in a city facing an affordability crisis to the brink of a stunning victory.

Just hours after Democratic Socialist Zohran Mamdani declared victory in New York's mayoral primary on Wednesday, a small group of business leaders convened with Mayor Eric Adams, who bypassed the Democratic primary and is instead running in the general election as an independent.