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Residents of the Big Apple will learn who will be their new city leader this Tuesday, in a race that will decide who runs and protects the country's largest city at a moment when Donald Trump has threatened to deploy military troops to the city.

Against that backdrop, New York has witnessed a mayoral election that has pitted two very different Democrats against one another. The election has become an increasingly bitter face-off, laced with alleged racial bias and Islamophobia, but it is the political differences between the two leading candidates that could have major implications for how the party performs in next year's congressional races.

The Progressive Challenger

On the left side is the democratic socialist, the young progressive candidate whose rapid ascent and people-powered movement has attracted global notice. On the establishment side is the former governor, the former New York governor now running as an independent – and enjoying the support of wealthy contributors and corporations.

As the election approaches, it is the progressive, the former longshot who defeated Cuomo in the party 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 2 million New Yorkers, has led his rival by double-digits in every poll conducted in October, and it is very much the progressive's race to throw away.

A Bitter Contest

However, Cuomo, who stepped down as the state's leader in 2021 amid allegations of sexual harassment, has stated clearly he will fight to the end, and not necessarily in an above-the-belt manner. He has trashed his opponent's objectives as unrealistic, and in the final stretch chuckled along as a broadcaster made Islamophobic remarks about Mamdani, who is a Muslim. Recently, Cuomo was strongly criticized as bigoted after posting an AI-generated ad that included a series of racist stereotypes and showed Mamdani freeing a convicts.

It's been a particularly ugly conclusion to an election that could be critical to the direction that the party, struggling in its reaction to Trump's authoritarian grabs, adopts in the coming years.

Broader Consequences

If the progressive secures a clear victory, the establishment party leaders who have refused to endorse his bid will be forced to reckon with a platform that has resonated with voters' anger at inequality, soaring price rises and the political elite. It would be difficult for the Senate leader and Hakeem Jeffries not to embrace at least some of Mamdani's ambitious ideas about economic justice, given the fresh face has created an excitement within the party arguably not seen since the Vermont senator campaigned for the White House in 2016.

Conversely, if Cuomo, who had been expected to sail to victory in the Democratic primary, achieve a surprising riches-to-rags-to-riches victory, it could reinforce national Democrats' current model of considered, lackluster opposition – a tactic that has angered the party base. A New York rejection of the progressive's progressive, positive message could persuade party leaders that the best plan is to stick to the center – even as surveys show the present version of the Democratic party is widely disliked nationwide.

Voter Enthusiasm

Voters in New York seem to prefer the Mamdani vision. Polls show that Mamdani supporters are much more excited about their candidate than Cuomo backers, something that has been evident throughout the campaign. The candidate's snappy videos on social media, his hopeful outlook for the city and his willingness to actually get out and meet people in the metropolis has attracted an army of over fifty thousand supporters, many of them youth or first-time voters.

Personal Attacks

Yet, the former governor, 67, continues to fight. And with the stakes against him, the former governor has resorted to negative campaigning in recent weeks.

Following extensive launching various attacks at his opponent to see what might stick, Cuomo has narrowed his focus on targeting the candidate directly. He has labelled Mamdani, who was of Ugandan origin to South Asian heritage, an "radical", and popped up on Fox Business for an interview with a rightwing host, where the candidate claimed New York “will not survive” Mamdani as mayor. It reached a nadir last week, when the former governor laughed along and said “that’s another problem” after a broadcaster said the candidate would “cheer” another 9/11-style attack.

Campaign Dynamics

The line of attack echoes much of what Trump, who has deployed the military reserves to Washington DC and threatened to do the same to NYC, has said about Mamdani, and perhaps that shouldn’t come as a surprise. A set of wealthy residents, including some who donated to Trump in the last presidential race, have pumped millions into trying to elect Cuomo into office, as other powerful voices have urged Curtis Sliwa to withdraw from the contest.

Political Histories

As far as the Cuomo camp, and his wealthy backers, are worried, it should never have come to this. When the assemblyman, one of 150 New York state assembly members, started his campaign for mayor in last year, not many had known him, and in reality, few even paid attention.

The former governor, by comparison, entered smoothly into the contest in March 2025 and became the instant favorite. He was the political heavyweight who seemingly held all the advantages. The classic establishment figure, he had married a Kennedy and served in Bill Clinton’s administration. He assumed office as the state's leader in over a decade ago, seventeen years after his father, the former governor, left office from the identical role.

The progressive, who was voted in to the state legislature in recently, does not have the same political heritage. But his commitment to providing no-cost transit and free childcare – along with the rent control promise – offer a brighter outlook of the city's direction than his opponent's pessimistic predictions about “mayhem” and rising criminal activity, and his vow to hire more police officers.

Recent Challenges

Still, the candidate has encountered some challenges in the final phase, after footage emerged suggesting him implying the NYPD and the Israel Defense Forces were connected.

“We have to make clear that when the boot of the NYPD is on your neck, it’s been laced by the IDF,” the candidate said in the recording, recorded at a Democratic Socialists of America gathering in recent years. The progressive, a longtime critic of the Israeli government who has said the country is committing genocide in Gaza, indicated he was questioning joint training exercises between the city police and Israeli forces.

Emotional Response

With the election nearing, the candidate seems to have gained sympathy and support, however, for his response to Cuomo’s increasing rhetoric.

Mamdani addressed the independent's 9/11 remarks in an emotional video. In it, the candidate remembered how, when he first ran for the legislature, a family member suggested to him that he did not have to disclose about his Muslim faith. It was a lesson, he said, that many Muslim New Yorkers had been taught “again and again”: “That safety could only be found in the shadows of our city. That it is in those shadows alone where followers of Islam could express their full identities, and that if we were to emerge from those shadows, then it is in those silence that we must leave our faith.”

Addressing the actions of Cuomo and Sliwa, who has alleged Mamd