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Residents of the Big Apple will discover the identity of their next mayor this election day, in a contest that will decide who runs and defends the country's most populous metropolis at a moment when the former president has threatened to deploy military troops to the city.

Against that backdrop, New York has witnessed a race for mayor that has matched two distinctly opposing Democrats against each other. The contest has turned into an acrimonious showdown, laced with accusations of racial bias and Islamophobia, but it is the political differences between the two leading candidates that could have major implications for how the Democratic party fares in next year's congressional races.

The Rising Progressive

On the left side is the democratic socialist, the 34-year-old progressive candidate whose meteoric rise and people-powered movement has attracted global notice. Representing the old guard is the former governor, the former New York governor now campaigning independently – and benefiting from the backing of wealthy contributors and corporations.

As the election approaches, it is Mamdani, the one-time underdog who beat his opponent in the Democratic primary who is firmly installed as the leading candidate. The candidate, who has run on a agenda of affordability and promised to halt rent increases for about 2 million New Yorkers, has led Cuomo by significant margins across all surveys conducted in the fall, and it is very much the progressive's election to throw away.

A Bitter Contest

However, Cuomo, who resigned as the state's leader in 2021 amid allegations of misconduct, has stated clearly he will battle to the finish, and not necessarily in an above-the-belt manner. He has criticized Mamdani's goals as unrealistic, and in recent days chuckled along as a broadcaster made Islamophobic remarks about the candidate, who is a Muslim. Two weeks ago, Cuomo was strongly criticized as racist after sharing an AI-generated ad that featured a slew of racial caricatures and showed his opponent freeing a convicts.

It's been a rather grubby conclusion to an race that could be key to the direction that the party, struggling in its reaction to Trump's authoritarian grabs, adopts in the coming years.

Broader Consequences

Should Mamdani secures a clear victory, the establishment party leaders who have declined to support his bid will be forced to reckon with a platform that has appealed to Americans' frustration at inequality, inflation and the political elite. It would be difficult for the Senate leader and Hakeem Jeffries not to adopt at least some of the candidate's ambitious ideas about economic justice, given the newcomer has created an excitement within the Democratic ranks arguably not seen since the Vermont senator ran for president in 2016.

Conversely, should the former governor, who had been expected to win easily in the Democratic primary, achieve a remarkable riches-to-rags-to-riches win, it could cement the party's existing approach of cautious, uninspiring opposition – a strategy that has infuriated the party base. A NYC defeat of the progressive's progressive, positive message could persuade party leaders that the best plan is to remain in the political center – even as polls show the present version of the party is deeply unpopular across the country.

Campaign Energy

Voters in New York appear to favor the progressive agenda. Polls show that his backers are much more excited about their candidate than Cuomo backers, something that has been apparent throughout the campaign. Mamdani's engaging content on digital platforms, 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 first-time voters.

Personal Attacks

Yet, the former governor, 67, continues to fight. And with the stakes stacked against him, the ex-leader has turned to negative campaigning in recent weeks.

After spending months launching various attacks at his opponent to see what might stick, Cuomo has narrowed his focus on attacking Mamdani directly. He has labelled his rival, who was of Ugandan origin to Indian parents, an “extremist”, and appeared on Fox Business for an interview with a rightwing host, where Cuomo asserted New York “will not survive” his opponent as mayor. It hit bottom last week, when the former governor chuckled and said “that’s another problem” after a radio host said the candidate would “cheer” another 9/11-style incident.

Political Landscape

The line of attack mirrors much of what Trump, who has sent the national guard to the capital and warned to take similar action to New York, has said about Mamdani, and maybe that shouldn’t come as a surprise. A group of billionaire New Yorkers, including some who donated to Trump in the last presidential race, have invested heavily into trying to elect Cuomo elected, as other powerful voices have urged 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 the assemblyman, one of one hundred fifty New York state assembly members, started his mayoral bid in last year, not many had known him, and in reality, barely anyone even paid attention.

The former governor, by contrast, eased his way into the contest in March 2025 and became the immediate frontrunner. He was the big beast who apparently held all the advantages. The quintessential establishment figure, he had married a Kennedy and served in Bill Clinton’s administration. He assumed office as New York governor in 2011, seventeen years after his father, Mario Cuomo, left office from the same position.

Mamdani, 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 free childcare – along with the rent control promise – present a brighter outlook of the future than Cuomo’s pessimistic predictions about “mayhem” and unfettered crime, and his vow to hire more police officers.

Campaign Controversies

Nevertheless, the candidate has faced difficulties in the final phase, after footage emerged appearing to show him implying the NYPD and the Israel Defense Forces were intertwined.

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

Emotional Response

As the race closes, Mamdani appears to have won sympathy and support, however, for his response to Cuomo’s escalating attacks.

The progressive addressed the independent's 9/11 remarks in an heartfelt recording. In it, Mamdani recalled how, when he first campaigned for state assembly, a family member suggested to him that he did not have to tell people about his Muslim faith. It was a realization, he said, that many local Muslims had been told “again and again”: “That safety could only be found in the shadows of our community. That it is in those hidden spaces alone where followers of Islam could embrace their full identities, and that if we were to emerge from those seclusion, then it is in those silence that we must set aside our faith.”

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