Mr. Mamdani roundly defeated Andrew M. Cuomo in the Democratic contest, widening his primary-night lead by a significant margin once ranked-choice tabulations were run.

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.

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.