35,712
Active registered voters
57
Precincts
22,172
Supervoters (62.09%)
5
Presidential cycles of results
Data as of June 7, 2026 · refreshed automatically from the official Ohio voter file
Party registration
Ohio doesn't register voters by party, so there's no party breakdown to show. Party lean is usually inferred from primary participation — that data is in the voter file and available inside Motion51.
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | PRECINCT SHELLEY | 1,035 | 757 | 73.14% |
| 2 | PRECINCT MINGO 2 | 870 | 622 | 71.49% |
| 3 | PRECINCT SALEM | 517 | 359 | 69.44% |
| 4 | PRECINCT BANTAM RIDGE | 992 | 688 | 69.35% |
| 5 | PRECINCT STEUBENVILLE 6-3 | 730 | 502 | 68.77% |
| 6 | PRECINCT WELLS | 856 | 586 | 68.46% |
| 7 | PRECINCT WINTERSVILLE A | 708 | 484 | 68.36% |
| 8 | PRECINCT BRENTWOOD | 660 | 450 | 68.18% |
| 9 | PRECINCT BELVEDERE | 527 | 354 | 67.17% |
| 10 | PRECINCT PLEASANT HILL 1 | 646 | 433 | 67.03% |
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 Ohio voter file
How Jefferson County voted for president
■ Democratic % ■ Republican % · 2024 total votes cast: 31,257
Election results are public records.
Source: Official county canvasses via MIT Election Data + Science Lab
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