If you spent any time looking at the nyc mayoral election map after the dust settled in November 2025, you probably noticed something pretty wild. The city didn't just vote; it shifted. We aren't talking about a tiny nudge here or there. It was a full-scale tectonic movement in how different blocks, from the tip of the Bronx down to the Tottenville shore, decided who should run the show at City Hall.
Honestly, the map looks like a patchwork quilt that someone accidentally bleached in some spots and dyed deep indigo in others.
Zohran Mamdani didn't just win; he redefined the "progressive" footprint. But if you look closely at the data coming out of the Board of Elections, the real story isn't just about who won. It’s about where the traditional "establishment" strongholds simply vanished. Andrew Cuomo’s independent run carved a weird, jagged path through the outer boroughs, and Curtis Sliwa’s Republican base held onto its red pockets with a literal iron grip.
The Great Divide: What the 2025 Map Actually Shows
When you pull up the interactive nyc mayoral election map, the first thing that hits you is the sheer volume of "Mamdani Blue" in places that used to be a lot more purple. We’re talking about a massive surge in Western Queens—Astoria and Long Island City were basically a lock—but the surprise was the South Bronx.
Historically, these areas were the bread and butter of the machine Democrats. Not anymore.
Mamdani pulled in over a million votes. To put that in perspective, that’s the first time a candidate has crossed that threshold since the late sixties. Why? Because the map shows a massive spike in youth turnout. In the 18-29 demographic, turnout doubled compared to 2021. You can see it on the map: any neighborhood with a high concentration of younger renters turned into a deep sea of socialist-leaning support.
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On the flip side, the "Cuomo Corridor" is fascinating. Andrew Cuomo, running as an independent after that massive primary upset, managed to snag 41.3% of the citywide vote. His support didn't come from the trendy spots. It came from the "homeowner belt." If you look at the nyc mayoral election map for Eastern Queens, Southern Brooklyn, and parts of the Bronx, you see where the moderate-to-conservative voters landed. They weren't ready for a 2% "millionaire tax" or a total rent freeze, so they stuck with the name they knew.
Why Staten Island Stayed Red (and Nobody is Shocked)
Staten Island is always the outlier. It’s basically the control group in the NYC political experiment. While Mamdani was sweeping Manhattan with 40.5% turnout, Staten Island was lagging at a measly 16.2%.
But the map tells a specific story there.
Curtis Sliwa, the Republican nominee, might have only pulled 7% citywide, but in neighborhoods like South Beach and Great Kills, his numbers were actually quite healthy. The issue for the GOP is that their base is shrinking or, more accurately, being drowned out by the sheer volume of new registrations in other boroughs. Between January and June of 2025, the city saw nearly 17,000 new registrations per day. Most of those weren't happening in the mid-Island.
The "Missing Million" and the Voter Map
One of the most discussed features of the nyc mayoral election map isn't actually a color. It’s the gray space—the people who didn't show up. The CUNY NYC Election Atlas often refers to this as the "missing million."
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Even with a historic 43% turnout (which is huge for a local NYC race), millions of eligible New Yorkers stayed home.
If you look at the map of "inactive" voters, it often mirrors the neighborhoods with the highest poverty rates. It’s a sad, consistent trend. Areas in Central Brooklyn and the South Bronx have high Mamdani support among those who did vote, but they also have the largest clusters of people who didn't participate at all.
Breaking Down the Boroughs: A Prose Map
Instead of a boring table, let's just walk through what the map feels like if you were standing in the middle of it:
- Manhattan: This was Mamdani’s playground. The Upper West Side and the Village went hard for the progressive platform. Interestingly, the high-earner precincts in the Upper East Side split heavily between Cuomo and Mamdani, suggesting that even the wealthy were divided on whether the "status quo" was working under the previous administration.
- The Bronx: A total battleground. The north was Cuomo country. The south was Mamdani territory. Sliwa barely made a dent except for tiny pockets in Throggs Neck.
- Brooklyn: This is where the election was won. Central Brooklyn—Bed-Stuy, Crown Heights, Bushwick—voted in numbers we haven't seen in decades. This is where that "one million votes" milestone was built.
- Queens: The home of the new Mayor. Astoria and Sunnyside were the epicenters. However, once you hit Bayside or Howard Beach, the map shifts abruptly to Cuomo-orange or Sliwa-red.
- Staten Island: Mostly a sea of Republican red and Independent orange. The North Shore was the only blue sanctuary on that side of the Verrazzano.
What This Means for 2026 and Beyond
Basically, the nyc mayoral election map is a warning. It’s a warning to the "old guard" that name recognition doesn't carry the weight it used to. Andrew Cuomo had all the money and the famous last name, but he couldn't beat a 34-year-old state assemblyman who mastered social media and ground-level organizing.
The map also proves that the "Trump Effect" in NYC isn't just about the presidency. We saw Trump make gains in NYC back in 2024, and you can see the echoes of that in the 2025 mayoral results. There is a growing, frustrated middle class that feels squeezed out by both the far left and the traditional elites.
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If you’re trying to make sense of the data, don't just look at the colors. Look at the margins. Mamdani won by about 9 points. That’s a "comfortable" win, but it’s not a mandate of the entire city. It’s a victory of the mobilized over the indifferent.
How to Use This Information
If you're a data nerd or just a concerned New Yorker, here is how you should actually read the nyc mayoral election map moving forward:
- Check the Precinct Level: Don't just look at "Brooklyn." Zoom in. Look at your specific block. You might be surprised to find your neighbor voted completely differently than you thought.
- Cross-Reference with Rent Data: If you overlay the map with areas of high rent increases, the Mamdani win makes perfect sense. People are desperate for housing stability.
- Watch the Registration Trends: The map of new voters is the most predictive tool we have. The 18-29 age bracket is the new power broker in New York City politics.
The 2025 map isn't just a record of who won a four-year job. It’s a blueprint of a city that is tired of the way things used to be. Whether the new administration can actually deliver on those map-shifting promises is the real question for 2026.
Keep an eye on the official Board of Elections "Statement of Canvass" for the final, certified precinct-level data. It’s a long, dry document, but it’s the only place where the map truly comes to life in numbers.
Next Steps for You:
Check the official NYC Board of Elections website to see the specific precinct-level breakdown for your own zip code. Comparing your neighborhood’s 2021 result to the 2025 map is the best way to see exactly how your local political climate is changing.