Zohran Mamdani has won New York City’s Democratic mayoral primary. A new vote count Tuesday under the city’s ranked choice voting system confirmed the progressive legislator’s stunning upset of former Gov.

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

Zohran Mamdani clinched victory Tuesday in the Democratic primary for New York City mayor and quickly drew more attacks and threats of arrest from President Donald Trump, a Queens native likely to be a central figure in one of this year’s most important contests.