Polls have closed in New York City, where a contentious race with the possibility of a socialist Muslim mayor garnered national attention and presented a test for the future of the Democratic Party.

Results from more than 800,000 mail-in and early voting ballots showed Assembly Member Zohran Mamdani leading by just under 12 points in the three-way race against disgraced former Gov. Andrew Cuomo and Guardian Angels founder and perennial gadfly Curtis Sliwa.

The race has been unlike any other in recent memory in New York. Minutes before polls closed, the New York City Board of Elections announced that 2 million people had cast ballots — the highest number since 1969.

Campaigning on a core platform of affordability, Mamdani went from little-known assembly member to household name as he criss-crossed the city, popping in at churches and nightclubs, supported by an army of volunteer canvassers.

Cuomo, who lost the primary to Mamdani in a stunning upset in June, billed himself as the best man to stand up to Donald Trump — an argument that was complicated Monday when the president endorsed him, pledging to slash federal funding to the city if Mamdani were to win.

Trump’s endorsement was by then effectively a formality: The right had already coalesced around New York’s former Democratic governor, with the president and other members of his party pushing Sliwa, the Republican candidate, to drop out and let Cuomo face Mamdani head-on. On social media, Trump

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