NEW YORK — Zohran Mamdani capped a sharp-elbowed campaign for New York City mayor Tuesday night with a historic win, cementing the democratic socialist as both a rising star and a divisive figure in the Democratic Party.

For Republicans and President Donald Trump, the results hand-deliver an ideal foil heading into midterm elections next year as they seek to paint their adversaries as out-of-touch leftists.

Come Jan. 1, Mamdani will become the city’s first Muslim mayor and the second in modern history after David Dinkins to identify as a democratic socialist. With his win, he vanquished former Gov. Andrew Cuomo, who lost to Mamdani in the June Democratic primary and ran an increasingly bitter and negative general election campaign as an independent.