Zohran Mamdani, a Democrat, announced his victory on November 5 in the mayoral race in New York City, defeating former New York Governor Andrew Cuomo (who ran as an independent) and Republican candidate Curtis Sliwa.
Mamdani, at age 34, becomes the city’s first Muslim mayor, first South Asian mayor, and the youngest to hold the office in more than a decade, in America’s largest city of about 8.5 million residents.
In his victory speech, Mamdani immediately criticized President Donald Trump — a native of New York who built his business empire there before entering politics.
“The way to make someone in power fear is to dismantle the conditions that let him increase his power. This isn’t just how to stop you, Mr. Trump, but how to stop people like you in the future. Mr. Trump — I know you’re watching me — I want to tell you: turn up the volume,” Mamdani declared to thunderous applause.
The remark was seen as a “declaration of war,” igniting a likely fierce confrontation between the city and the federal government. Mr. Trump later posted on Truth Social: “It’s on now!”
Analyst Basil Smikle said, “They both come from New York, both built a brand about changing the old system, yet pursue completely opposite goals… Their relationship will be extremely tense—and ‘tense’ may even be an understatement.”
Mamdani was born in Uganda to South Asian-Indian parents, grew up in Cape Town, South Africa, and moved to New York at age 7. He is the son of film producer Mira Nair and African-studies professor Mahmood Mamdani of Columbia University.
In 2014, Mamdani graduated with a degree in African Studies from Bowdoin College and co-founded a student group supporting Palestinians at the school. He worked as a housing adviser in Queens assisting low-income residents facing home-repossessions, and even moon-lighted as rapper “Mr. Cardamom”.
That experience pushed him into politics to tackle the housing crisis. In November 2020, Mamdani was elected to the New York State Assembly, becoming the first South Asian and first Ugandan-American, and one of three Muslims in the chamber. He was re-elected in 2022 and 2024.
He was not widely known when he launched his mayoral run last year. He defeated Cuomo in the June Democratic primary by 12 percentage points and quickly became one of America’s most popular and polarising politicians.
Throughout his campaign, Mamdani repeatedly framed himself as the challenger to Trump, unlike Cuomo. “They share the same donors, the same narrow vision, and a mindset that says: I’ll do what I want and not fear punishment,” Mamdani said.
Mamdani’s platform focused largely on opposing Trump’s policies — especially immigration policies impacting New York. His promises include free city buses, maintaining stable rents, affordable childcare, raising the minimum wage by 2030, and lowering living costs by increasing taxes on large corporations and the top 1 % of earners in New York.
President Trump monitored Mamdani’s pledges and used them in his campaign rallies. He described Mamdani as “horrible,” “bad news,” a “crazy man” he might jail. On social media and in public Trump warned that if Mamdani became mayor of New York then the city would face “never-before-seen trouble with Washington”.
Trump’s aides and allies believe Mamdani and New York are now likely targets in Trump’s strategy to deploy the National Guard for immigration raids. Others are more cautious, noting Trump’s still-significant financial ties to New York’s economic ecosystem.
Trump threatened that if Mamdani is elected, the federal government would withhold full funding for New York City — only giving the minimum required. According to the New York State Comptroller’s office, the federal government will allocate US$7.4 billion to New York City in fiscal year 2026 — about 6.4 % of the city’s total spending.
If Trump’s threat is carried out, New York’s city government would likely sue, and Mamdani appears ready for that fight. He declared he will not be intimidated by the president’s threats, emphasising that New York will become a model for “defeating Trump and his political movement”.
“If there is anywhere that can show America how to beat Donald Trump, it is the city that made him,” Mamdani told a crowd of supporters. “Listen up Mr. Trump: if you want to beat any one of us, you will have to contend with all of us.”
To prepare for the legal battle, Mamdani said he will hire an additional 200 lawyers for the city’s Justice Department to counter “abuses of power from the White House”.
Mamdani also criticised Trump’s threat to send the National Guard to New York, arguing that if he really cared about safety, the President should send guards to the ten states with the highest crime rates, eight of which are run by Republicans. “But because they are Republican states, he won’t act,” Mamdani said.
He dismissed concerns that his victory speech sounded like a “declaration of war” on the President. “I will work with the President if he wants to partner on his campaign promises to make food cheaper or reduce cost-of-living,” Mamdani told NY1. “But if the President goes after the people of the city, I will stand up for them.”
Long-time Obama advisor David Axelrod said some of Mamdani’s remarks about Trump were “unnecessary”. “I don’t think attacking Trump is a wise strategy,” Axelrod said. “But standing firm when he attacks the city may be essential. The question is: how to challenge the President while still showing you are mayor of all the city’s people?”
Democratic strategist Anthony Coley predicts the showdown between Trump and Mamdani “will be very fierce”.
“President Trump is sure to try punishing Mamdani by cutting New York’s federal budget, but he should be careful. Mamdani knows how to mobilise younger voters — including many who backed Trump in 2024,” Coley said.