Presidential elections · 2000–2024
Nassau County, NY — Presidential Election Results (2000–2024)
In 2024, Nassau County, New York voted for Donald J. Trump (Republican) by R+4.2 — 338,424 Democratic to 368,117 Republican of 712,299 votes cast. From 2020 to 2024 it shifted 13.7 points toward Republicans. That makes it 16.8 points more Republican than New York overall (D+12.6).
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Margin by election, 2000–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
Every election in Nassau County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 338,424 | 368,117 | 5,758 | 47.5% | 51.7% | R+4.2 |
| 2020 | 396,504 | 326,716 | 15,149 | 53.7% | 44.2% | D+9.5 |
| 2016 | 326,088 | 288,313 | 22,566 | 51.2% | 45.3% | D+5.9 |
| 2012 | 294,661 | 237,862 | 35,628 | 51.9% | 41.9% | D+10.0 |
| 2008 | 342,067 | 288,758 | 4,589 | 53.8% | 45.4% | D+8.4 |
| 2004 | 317,283 | 273,502 | 27,558 | 51.3% | 44.2% | D+7.1 |
| 2000 | 341,610 | 226,954 | 21,143 | 57.9% | 38.5% | D+19.4 |
Nassau County presidential elections — FAQ
Who carried Nassau County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Nassau County, New York in 2024 by R+4.2, with 712,299 votes cast. Data: MIT Election Data & Science Lab.
How did Nassau County shift between 2020 and 2024?+
Nassau County shifted 13.7 points toward Republicans between 2020 (D+9.5) and 2024 (R+4.2).
Is Nassau County more Democratic or Republican than New York overall?+
In 2024, Nassau County went R+4.2 while New York overall went D+12.6 — 16.8 points more Republican than the state.
Where does this election data come from?+
County-level presidential returns (2000–2024) come from the MIT Election Data and Science Lab (MEDSL), published on the Harvard Dataverse. pumsdata is an independent product that makes the data easy to map and compare, and is not affiliated with MEDSL or Harvard.