
The 2025 Mayoral Campaign
The little-known assemblymember who beat a former governor twice — once in the primary, once in the general.
The announcement
In October 2024, Mamdani announced his candidacy for mayor of New York City. His platform was unapologetically cost-of-living focused: fare-free city buses, universal childcare, city-owned grocery stores, a freeze on rent-stabilized rents, and a $30 minimum wage by 2030, funded in part by tax increases on corporations and earners over $1 million. He was a member of the Democratic Socialists of America and framed the campaign in those terms from the start.
The primary upset
On June 24, 2025, under the city’s ranked-choice system, Mamdani defeated former governor Andrew Cuomo in the Democratic primary — an upset that drew national attention. Cuomo, who had resigned the governorship in 2021 after a sexual-harassment investigation and was attempting a political comeback, conceded on election night. Mamdani drew endorsements from Senator Bernie Sanders and Representative Alexandria Ocasio-Cortez and the Working Families Party’s ballot line; his campaign’s multilingual, social-media-driven field operation was widely credited with expanding the electorate.
The general election
Cuomo continued on an independent line, setting up a three-way November contest with Mamdani and Republican Curtis Sliwa. President Donald Trump endorsed Cuomo the day before the election and threatened to withhold federal funds if Mamdani won. On November 4, 2025, Mamdani won with 1,114,184 votes (50.78%) to Cuomo’s 906,614 (41.32%) and Sliwa’s 153,749 (7.01%). Turnout reached 2,218,647 voters — 43.47%, the highest for a mayoral race in decades. (These are the certified totals from the New York City Board of Elections, December 2, 2025; election-night provisional counts were lower.) In his victory speech he declared: “My friends we have toppled a political dynasty.”
What the win meant
Mamdani became New York City’s first Muslim mayor, its first South Asian mayor, and its first mayor born in Africa — as well as its youngest in generations (34 at inauguration). Supporters read the result as proof that an unapologetic left platform could win citywide; critics read it as a warning about the city’s direction. Both readings are attributed to their authors; this site records the result, not the verdict.
Source notes
- Campaign platform: Mamdani’s 2025 campaign materials and Wikipedia’s campaign summary (2026-09-27).
- Primary result and concession: AP and NPR campaign coverage, June 2025.
- General-election figures: NYC Board of Elections, Statement and Return Report for Certification (December 2, 2025) — Mamdani 1,114,184 (50.78%), Cuomo 906,614 (41.32%), Sliwa 153,749 (7.01%), turnout 2,218,647 (43.47%) — as tracked by the Wikipedia election infobox. Widely reported election-night provisional counts (Mamdani 1,036,051 / 50.4%, Cuomo 854,995, Sliwa 146,137) were superseded by certification.
- Trump endorsement and funding threat: torchonline.com, November 2025.
- Victory-speech quotation: The City Reporter, November 4, 2025 (verbatim).