1,083,400
Active registered voters
308
Precincts
536,831
Supervoters (49.55%)
5
Presidential cycles of results
Data as of June 10, 2026 · refreshed automatically from the official New York voter file
Suffolk County, New York has 1,083,400 active registered voters — 31.3% Republican, 32.7% Democratic, and 30.2% with no party affiliation, as of June 2026.
Party registration
Democratic 354,131 · Republican 339,473 · No Party Affiliation 327,717 · Other parties 62,079
Source: Motion51 voter database — official New York voter file
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 270 | 954 | 726 | 76.1% |
| 2 | 279 | 444 | 334 | 75.23% |
| 3 | 278 | 524 | 372 | 70.99% |
| 4 | 197 | 890 | 626 | 70.34% |
| 5 | 284 | 1,200 | 776 | 64.67% |
| 6 | 251 | 1,120 | 721 | 64.38% |
| 7 | 233 | 777 | 482 | 62.03% |
| 8 | 188 | 1,236 | 753 | 60.92% |
| 9 | 195 | 1,709 | 1,041 | 60.91% |
| 10 | 198 | 2,282 | 1,388 | 60.82% |
Supervoters are active registered voters who cast a ballot in at least 3 of the last 4 November general elections (2018–2024). Percentages are precinct totals from the official state voter file — no individual voter information is shown. Precincts with fewer than 400 active voters are excluded.
Source: Motion51 voter database — official New York voter file
How Suffolk County voted for president
■ Democratic % ■ Republican % · 2024 total votes cast: 759,361
Election results are public records.
Source: Official county canvasses via MIT Election Data + Science Lab
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