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New Yorkers will learn the identity of their new city leader this Tuesday, in a race that will decide who runs and protects the country's most populous metropolis at a moment when Donald Trump has threatened to deploy military troops to the city.

Against that backdrop, New York has witnessed a race for mayor that has matched two very different Democrats against one another. The election has become an increasingly bitter face-off, laced with alleged racism and Islamophobia, but it is the ideological divide between the two main candidates that could have significant consequences for how the party fares in next year's congressional races.

The Progressive Challenger

In the progressive corner is the democratic socialist, the young progressive candidate whose rapid ascent and people-powered movement has brought international attention. On the establishment side is the former governor, the ex- New York governor now campaigning independently – and benefiting from the support of ultra-rich donors and big business.

With days to go, it is Mamdani, the former longshot who defeated Cuomo in the Democratic primary who is solidly positioned as the frontrunner. The candidate, who has campaigned on a platform of economic justice and promised to halt rent increases for about two million New Yorkers, has led his rival by significant margins in every poll conducted in October, and it is very much the progressive's election to throw away.

The Controversial Campaign

Yet, Cuomo, who stepped down as the state's leader in recent years amid allegations of sexual harassment, has made it clear he will battle to the finish, and not necessarily in an above-the-belt manner. He has criticized Mamdani's objectives as unachievable, and in recent days chuckled along as a radio host made anti-Muslim comments about Mamdani, who is Muslim. Two weeks ago, the independent was widely condemned as racist after sharing an artificial intelligence video that included a series of racist stereotypes and showed Mamdani releasing a convicts.

This represents a rather grubby conclusion to an election that could be key to the direction that the Democratic party, struggling in its reaction to the former president's power moves, adopts in the near future.

National Implications

If the progressive wins convincingly, the party establishment who have declined to support his campaign will be forced to reckon with a platform that has appealed to Americans' frustration at inequality, soaring price rises and the establishment. It would be hard for Chuck Schumer and the House leader not to adopt at least some of Mamdani's ambitious ideas about affordability, given the newcomer has generated an excitement within the Democratic ranks perhaps not witnessed since Bernie Sanders ran for president in 2016.

However, should the former governor, who had been predicted to win easily in the June primary, complete a surprising riches-to-rags-to-riches win, it could reinforce national Democrats' current model of considered, lackluster opposition – a strategy that has infuriated the party base. A New York defeat of the progressive's optimistic platform could persuade party leaders that the best plan is to remain in the political center – even as surveys show the present version of the party is deeply unpopular across the country.

Voter Enthusiasm

Voters in New York seem to prefer the Mamdani vision. Surveys show that his backers are far more enthusiastic about their choice than his opponent's supporters, something that has been evident throughout the campaign. Mamdani's engaging content on social media, his hopeful outlook for New York and his willingness to actually get out and meet people in the city has attracted an army of over fifty thousand supporters, many of them youth or new participants.

Negative Tactics

However, the former governor, 67, isn't giving up. And with the risks stacked against him, the ex-leader has turned to ugly messaging in recent weeks.

Following extensive launching various attacks at Mamdani to see what might stick, the independent has narrowed his focus on attacking the candidate directly. He has labelled his rival, who was of Ugandan origin to Indian parents, an "radical", and appeared on conservative media for an discussion with a rightwing host, where the candidate claimed New York “will not survive” his opponent as mayor. It reached a nadir last week, when Cuomo chuckled and said “that’s another problem” after a broadcaster said the candidate would “cheer” another terrorist incident.

Campaign Dynamics

This strategy echoes much of what Trump, who has sent the military reserves to the capital and threatened to take similar action to NYC, has said about Mamdani, and perhaps that is expected. A set of billionaire New Yorkers, including some who donated to the Republican in the last presidential race, have invested heavily into trying to get the independent into office, as other influential figures have pressured the Republican candidate to drop out from the contest.

Candidate Backgrounds

For the his team, and his wealthy backers, are concerned, it should not have reached to this. When the assemblyman, one of 150 New York state assembly members, launched his campaign for mayor in October 2024, few had known him, and in truth, barely anyone even paid attention.

The former governor, by contrast, eased his way into the race in March 2025 and became the immediate frontrunner. He was the political heavyweight who seemingly held all the advantages. The quintessential establishment figure, he had wed a Kennedy and worked in Bill Clinton’s administration. He became New York governor in 2011, seventeen years after his parent, the former governor, left office from the same position.

Mamdani, who was voted in to the New York state assembly in 2020, does not have the same political heritage. But his commitment to providing no-cost transit and affordable child services – along with the rent control promise – present a more positive vision of the future than Cuomo’s pessimistic predictions about “mayhem” and unfettered crime, and his vow to increase police presence.

Recent Challenges

Nevertheless, the candidate has encountered difficulties in recent days, after footage emerged suggesting him suggesting the NYPD and the IDF were intertwined.

“We have to make clear that when the pressure of the police is on your throat, it’s been influenced by the Israeli military,” the candidate said in the recording, filmed at a Democratic Socialists of America convention in recent years. The progressive, a longtime critic of Israel who has said the nation is engaging in atrocities in the Palestinian territory, indicated he was criticizing cooperative programs between the city police and Israeli forces.

Emotional Response

As the race closes, the candidate seems to have gained sympathy and support, however, for his response to his opponent's increasing rhetoric.

Mamdani responded to Cuomo’s 9/11 remarks in an heartfelt recording. In it, Mamdani remembered how, when he first campaigned for state assembly, a Muslim uncle advised to him that he did not have to tell people about his religion. It was a realization, he said, that many Muslim New Yorkers had been told “again and again”: “That security could only be found in the margins of our community. That it is in those shadows alone where Muslims could embrace their full identities, and that if we were to step out from those seclusion, then it is in those shadows that we must leave our beliefs.”

Addressing the behavior of Cuomo and Sliwa, who has claimed Mamd