In a striking shift from previous voting trends, over half of the participants in New York City’s recent mayoral election were under the age of 55, with Millennials and Gen Z voters playing a prominent role. This change in voter demographics is largely attributed to the vibrant campaign of Zohran Mamdani, whose focus on affordability captured the attention of younger New Yorkers.

Mamdani, a 34-year-old Assemblyman from Queens, emphasized an agenda centered on making the city more affordable, a message that resonated deeply with the city’s youth, who are increasingly burdened by the rising cost of living. His approach led to a decisive 10-point victory over independent contender Andrew Cuomo, underlining the impact of his campaign among younger demographics.

In a detailed analysis by the Daily News, it is evident that Mamdani’s outreach efforts were particularly effective in mobilizing younger voters. The data reveals that approximately 1.16 million New Yorkers under the age of 55 participated in the election held on November 4, constituting nearly 58% of the overall turnout of over 2 million voters. This election also marked the city’s highest voter turnout for a mayoral race since the 1960s.

In stark contrast, only around 850,000 voters aged over 55 cast their ballots, highlighting the significant influence of the younger electorate. Particularly noteworthy is the participation of voters aged 18 to 44, spanning the Gen Z and Millennial demographics, who accounted for approximately 42% of the total votes, numbering about 855,000.

Historically, older voters have dominated the polls in New York City’s mayoral elections. Jerry Skurnik, an election analyst, pointed out that in the 2021 mayoral race, which saw Eric Adams win, less than 40% of voters were under the age of 55. However, that election was neither as competitive nor did it have as high a turnout as this year’s contest.

Historically, older generations have dominated at the polls in New York City mayoral elections. Election analyst Jerry Skurnik noted that residents younger than 55 made up less than 40% of those who voted in the 2021 mayoral contest won by Eric Adams, albeit that race wasn’t particularly competitive and had far lower turnout.

Basil Smikle, a veteran political strategist who was appointed in 2015 by then-Gov. Cuomo to serve as the New York State Democratic Party’s executive director, said he couldn’t think of a local city election in which young voters outpaced older ones in the type of way they did this year.

While the demographics data doesn’t show how individual residents voted, Smikle argued it’s a non-brainer most of the younger ones went for Mamdani, noting his support among newer generations became palpable as he ran a campaign centered on a message of change and “distrust in traditional institutions.” NBC News exit polling backs up Smikle’s theory, showing Mamdani clinching 60% more support than Cuomo among voters between 18 and 29.

“I think younger voters saw themselves in [Mamdani],” Smikle said before reasoning that was an especially important factor in the context of Mamdani’s closest competitor, Cuomo, being representative of New York’s old political guard as he ran a campaign focused heavily on his long record in government.

The fact that Mamdani didn’t have an extensive resume, Smikle added, might have even worked in his favor. “He had more credibility as an agent of change,” he said.

Andrew Yang, a businessman who ran unsuccessfully for president in 2020 and New York City mayor in 2021, credited Mamdani’s savvy, humorous social media presence, arguing that was another big reason why he fired up so many young voters. Yang, who was an early front-runner in the 2021 mayoral race after also prioritizing social media, said he believes candidates for elected offices across the country are going to try to replicate Mamdani’s candidacy.

“You’re going to see legions of candidates try, but Zohran is a distinctly talented communicator and New York City gets a lot more media attention than the average election elsewhere,” he said.

Mamdani’s campaign, more significantly, was centered on a set of easily digestible policy proposals: Freeze the rent for the city’s roughly 2 million stabilized tenants, drastically expand fully subsidized childcare and make public buses free to ride — and then pay for all of it by jacking up taxes on millionaires and corporations. He was able to blunt a range of criticisms, from the potential economic fallout of his vision to positions and statements on Israel and Gaza some viewed as antisemetic.

“He was championing policies that young people believe in,” said Michael Lange, a progressive election analyst who has followed Mamdani’s rise closely since he launched his mayoral campaign just over a year ago.

It’s also the policy front that will prove the most challenging for Mamdani as he takes office Jan. 1 as the youngest New York City mayor in over a century. Most of Mamdani’s promises — the tax increases, the expanded childcare, the free buses — are contingent on funding and legislative action from Albany.

The state Legislature’s Democratic leaders are generally supportive of Mamdani’s proposals. But Gov. Hochul, who faces a competitive race for reelection next year, has been openly skeptical of the idea of raising taxes in 2026, even on high-earners, a stance that could seriously complicate many components of Mamdani’s agenda.

Meantime, Mayor Adams, who dropped his reelection bid in late September, is actively looking into finding a way to at least temporarily block Mamdani from enacting his signature rent freeze on stabilized tenants.

For some Mamdani supporters, immediate success on his policy pledges isn’t a must.

“At the end of the day, I’d rather have a politician with bold yet concrete ideas, even if they may be outside of his immediate grasp,” Will Sabel, a 38-year-old Park Slope resident, said in an interview Tuesday after casting his ballot for Mamdani. “The fact he’s articulating his vision coherently and clearly, and clearly stands for it, gives me confidence that no matter what it takes, he’s going to at least try, even if it’s not something he can snap his fingers and do.”

Mamdani has set the bar high, though. “When we enter City Hall in 58 days, expectations will be high,” he said in his Tuesday night victory speech. “We will meet them.”

Smikle, the ex-state Democratic Party executive director, warned that many of Mamdani’s supporters likely aren’t going to be as forgiving as Sabel.

“It’s going to be very important for him to manage expectations in the short term,” Smikle said. “I think he will need some big wins in the beginning of his administration.”

With Colin Mixson