Voter Turnout & Participation
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Over 2 million votes were cast in the 2025 NYC mayoral election — the highest total in a mayoral race in the city since the late 1960s. NBC New York+2Wikipedia+2
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Historically, turnout for NYC mayoral elections has been low: for example, about 23% of registered voters participated in 2021. NYCEDC
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Groups more likely to vote: older age groups (50+), college-educated voters, and certain geographic neighborhoods (e.g., parts of Manhattan and Brooklyn had higher turnout). The City+1
Demographic Breakdown of Support in 2025
Here are some key demographic patterns of support for the leading candidates in the 2025 race.
Race / Ethnicity
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A poll showed that among key racial/ethnic groups, one candidate (Zohran Mamdani) led: Black voters ~48%, Hispanic voters ~45%, East/South Asian voters ~48%. Empire Report New York+1
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In exit-poll data from the general election: Mamdani won ~61% of precincts that are mostly Black, ~57% in mostly Hispanic precincts; the opponent (Andrew Cuomo) won ~52% of mostly White precincts. Wikipedia
Age
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Young voters (ages 18-29) were heavily in favor of Mamdani. Wikipedia
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Older voters (50+) are the most reliable bloc in turnout and have large undecided shares. For example, ~8 in 10 undecided voters in a poll were age 50+. AARP States+1
LGBTQ+
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According to exit polling: LGBTQ voters (making up ~14% of electorate) supported Mamdani ~82%. Gay City News
Nativity / Immigration Status
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A poll found that among foreign-born New Yorkers, one candidate (Mamdani) had ~62% support vs ~24% for Cuomo. Among American-born voters, Cuomo led (~40%) vs Mamdani (~32%). New York Post
Religion / Specific Communities
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In precincts with heavy Orthodox Jewish populations, Cuomo had very strong support. In one source: Mamdani ~33% of the Jewish vote vs ~63% for Cuomo. Wikipedia+1
Key Insights & Implications
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The strong support for Mamdani among younger voters, minority racial/ethnic groups, LGBTQ voters, and foreign-born residents suggests this coalition was central to his success.
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Older voters (50+) remain a crucial pivot group, because they turn out in higher numbers and many remain undecided late in the race.
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Geographically and demographically, wealthier or whiter neighborhoods (and certain religious-community enclaves) may have leaned differently than the citywide aggregate.
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Although turnout was high in raw numbers, when compared to eligible voters it still leaves significant non-participation potential, especially in lower-income or less-engaged neighborhoods.
