20,830
Active registered voters
8
Precincts
11,144
Supervoters (53.5%)
5
Presidential cycles of results
Data as of June 10, 2026 · refreshed automatically from the official New York voter file
Seneca County, New York has 20,830 active registered voters — 39.3% Republican, 27.6% Democratic, and 26.3% with no party affiliation, as of June 2026.
Party registration
Democratic 5,758 · Republican 8,188 · No Party Affiliation 5,473 · Other parties 1,411
Source: Motion51 voter database — official New York voter file
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 7 | 415 | 237 | 57.11% |
| 2 | 2 | 4,456 | 2,524 | 56.64% |
| 3 | 1 | 7,839 | 4,347 | 55.45% |
| 4 | 8 | 1,031 | 550 | 53.35% |
| 5 | 3 | 2,600 | 1,316 | 50.62% |
| 6 | 6 | 706 | 352 | 49.86% |
| 7 | 4 | 2,299 | 1,133 | 49.28% |
| 8 | 5 | 1,484 | 685 | 46.16% |
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 Seneca County voted for president
■ Democratic % ■ Republican % · 2024 total votes cast: 14,989
Election results are public records.
Source: Official county canvasses via MIT Election Data + Science Lab
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