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New Yorkers will learn the identity of their new city leader this Tuesday, in a contest that will determine who governs and defends the country's most populous metropolis at a time when Donald Trump has threatened to deploy military troops to the city.

In this context, New York has experienced a race for mayor that has pitted two very different Democratic figures against one another. The contest has become an increasingly bitter showdown, marked by accusations of racial bias and anti-Muslim sentiment, but it is the political differences between the two leading contenders that could have major implications for how the Democratic party fares in next year's congressional races.

The Progressive Challenger

On the left side is the democratic socialist, the 34-year-old progressive candidate whose rapid ascent and grassroots campaign has brought global notice. On the establishment side is the former governor, the ex- Democratic New York governor now campaigning independently – and benefiting from the backing of ultra-rich donors and big business.

As the election approaches, it is Mamdani, the one-time underdog who defeated Cuomo in the Democratic primary who is firmly installed as the frontrunner. The candidate, who has campaigned on a agenda of affordability and pledged to halt rent increases for about two million city residents, has led his rival by double-digits across all surveys taken in the fall, and it is very much the younger man's race to lose.

The Controversial Campaign

However, Cuomo, who resigned as governor in 2021 amid allegations of misconduct, has stated clearly he will battle to the finish, and not necessarily in an above-the-belt fashion. He has criticized his opponent's goals as unrealistic, and in the final stretch laughed as a radio host made Islamophobic remarks about Mamdani, who is a Muslim. Recently, the independent was widely condemned as bigoted after posting an AI-generated ad that featured a series of racist stereotypes and showed Mamdani freeing a group of criminals.

It's been a particularly ugly end to an election that could be key to the direction that the party, struggling in its reaction to Trump's authoritarian grabs, adopts in the near future.

Broader Consequences

If the progressive secures a clear victory, the party establishment who have declined to support his campaign will be compelled to address a message that has appealed to voters' anger at economic disparity, soaring price rises and the political elite. It would be hard for the Senate leader and Hakeem Jeffries not to embrace at least a portion of the candidate's progressive proposals about economic justice, given the newcomer has generated an excitement within the Democratic ranks perhaps not witnessed since Bernie Sanders ran for president eight years ago.

Conversely, if Cuomo, who had been expected to sail to victory in the Democratic primary, complete a remarkable riches-to-rags-to-riches win, it could cement the party's current model of cautious, uninspiring opposition – a strategy that has angered grassroots members. A NYC defeat of the progressive's progressive, positive message could persuade party leaders that the best plan is to stick to the political center – even as polls show the current iteration of the Democratic party is widely disliked nationwide.

Campaign Energy

Residents of the city seem to prefer the Mamdani vision. Polls show that his backers are far more enthusiastic about their candidate than Cuomo backers, something that has been evident during the race. Mamdani's snappy videos on digital platforms, his optimistic vision for New York and his readiness to actually get out and connect with voters in the metropolis has attracted an army of more than 50,000 supporters, many of them young or new participants.

Personal Attacks

However, Cuomo, 67, isn't giving up. And with the stakes against him, the former governor has resorted to ugly messaging in recent weeks.

After spending months launching various attacks at his opponent to see what might stick, Cuomo has concentrated on attacking the candidate personally. He has called his rival, who was born in Uganda to South Asian heritage, an “extremist”, and appeared on Fox Business for an interview with Maria Bartiromo, where Cuomo claimed the city “will not survive” Mamdani as city leader. It reached a nadir recently, when Cuomo chuckled and said “that’s another problem” after a broadcaster said the candidate would “cheer” another 9/11-style incident.

Political Landscape

The line of attack echoes much of what Trump, who has sent the military reserves to Washington DC and threatened to do the same to New York, has said about the progressive, and maybe that shouldn’t come as a surprise. A set of billionaire New Yorkers, including some who contributed to the Republican in the last presidential race, have pumped millions into trying to get Cuomo elected, as other powerful voices have pressured the Republican candidate to withdraw from the contest.

Political Histories

For the his team, and his billionaire supporters, are worried, it should never have come to this. When Mamdani, one of one hundred fifty state legislators, started his mayoral bid in last year, few had known him, and in reality, barely anyone even noticed.

Cuomo, by contrast, eased his way into the contest in March 2025 and became the immediate frontrunner. He was the political heavyweight who apparently held every edge. The classic establishment figure, he had married a Kennedy and served in Bill Clinton’s administration. He assumed office as New York governor in 2011, 17 years after his parent, Mario Cuomo, stepped down from the same position.

The progressive, who was elected to the New York state assembly in 2020, does not have the comparable background. But his dedication to providing free buses and affordable child services – along with the freeze-the-rent pledge – present a more positive vision of the city's direction than his opponent's pessimistic predictions about “mayhem” and rising criminal activity, and his promise to hire more police officers.

Campaign Controversies

Still, Mamdani has faced some challenges in the final phase, after footage emerged suggesting him implying the NYPD and the IDF were connected.

“We have to make clear that when the pressure of the NYPD is on your throat, it’s been influenced by the IDF,” Mamdani said in the clip, recorded at a Democratic Socialists of America convention in 2023. The progressive, a vocal opponent of the Israeli government who has said the nation is engaging in atrocities in Gaza, indicated he was questioning joint training exercises between the NYPD and Israeli forces.

Emotional Response

With the election nearing, the candidate seems to have gained empathy and backing, however, for his reaction to Cuomo’s increasing rhetoric.

The progressive addressed Cuomo’s 9/11 remarks in an emotional video. In it, Mamdani recalled how, when he first campaigned for the legislature, a Muslim uncle advised to him that he did not have to disclose about his Muslim faith. It was a realization, Mamdani said, that many Muslim New Yorkers had been told “again and again”: “That security could only be found in the shadows of our city. That it is in those shadows alone where Muslims could embrace their full identities, and that if we were to emerge from those shadows, then it is in those shadows that we must set aside our faith.”

Speaking to the behavior of Cuomo and Sliwa, who has claimed Mamd