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.

Zohran Mamdani, a 33-year-old state assembly member and democratic socialist, is on the verge of a major upset in the race to be New York City’s next mayor. Former New York governor Andrew M. Cuomo conceded the Democratic primary Tuesday night,

Cuomo, who long led polls in the Democratic primary, conceded Tuesday night before vote-counting was even finished.