Who is Zohran Mamdani? Key facts after 34-year-old elected New York City Mayor

On the campaign trail, Mr Mamdani faced off against now-independent Mr Cuomo and Republican candidate Curtis Sliwa to lead the city.

He calls himself a "democratic socialist" - but critics say his agenda is closer to communism, including Donald Trump.

Mr Mamdani moved to New York with his family aged seven and became a naturalised US citizen in 2018.

He has served as a member of the New York State Assembly, representing the Queens neighbourhood of Astoria since 2021.

A Muslim and a staunch pro-Palestine activist, he has promised to raise taxes for the most wealthy in the city, and use the money to subsidise city buses and provide taxpayer-funded universal childcare.

If elected, not only would he be New York's most left-leaning mayor, he would also become the city's first ever Muslim leader.

Mr Mamdani has received endorsements from big names on the American left, including Bernie Sanders and "squad" member Alexandria Ocasio-Cortez.

Sir Sadiq Khan - also a Muslim mayor of a major Western city - has backed Mr Mamdani, urging New Yorkers to "see through the politics of hatred and fear, and embrace Mr Mamdani's hopeful and optimistic vision for the future".

However, the Democrat candidate has also been slated by Donald Trump, who has branded him a "100 per cent communist lunatic".

The President said: "Any Jewish person that votes for Zohran Mamdani, a proven and self professed Jew hater, is a stupid person."

Mr Mamdani has denied all accusations of antisemitism over his criticism of the Israeli Government.

The President has threatened to withhold federal funding if Mr Mamdani wins - and has instead given his backing to Mr Cuomo, as has Elon Musk.

In 2013, Mr Mamdani shared an article by Glenn Greenwald questioning whether Lee Rigby’s murder at the hands of Islamists was actually terrorism.

In the same year, his mother, Mira Nair, described her son as "not an American at all" in an interview with the Hindustan Times.

She added: "He was born in Uganda, raised between India and America. He is at home in many places. He thinks of himself as a Ugandan and as an Indian."

At the time, Mr Mamdani was a student at Bowdoin College, a liberal arts school in Maine.

More recently, he shared photos of himself smiling alongside Imam Siraj Wahhaj, an unindicted co-conspirator in the deadly 1993 World Trade Centre bombing who once called for an unarmed "army" of 10,000 men to wage a "gun-free jihad" in NYC.

Just this weekend, Jeremy Corbyn revealed he would be helping Mr Mamdani's campaign - sparking fury from Mr Cuomo.

"Having Jeremy Corbyn - someone whose party was found to have committed unlawful acts of discrimination against Jewish people under his leadership - phone-banking for Zohran Mamdani says everything you need to know," he said.

“New York doesn’t need the politics of moral compromise. We need leadership that rejects antisemitism, extremism, and division in every form and in every corner."