7,934
Active registered voters
18
Precincts
3,481
Supervoters (43.87%)
5
Presidential cycles of results
Voter file loaded July 20, 2026 · figures are from that file, held as a fixed record
Franklin County, Idaho has 7,934 active registered voters — 82.4% Republican, 2.7% Democratic, and 0.0% with no party affiliation, as of July 2026.
Party registration
Democratic 218 · Republican 6,539 · No Party Affiliation 0 · Other parties 1,177
Source: Motion51 voter database — official Idaho voter file
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 14 TREASURETON | 421 | 208 | 49.41% |
| 2 | 16 WHITNEY | 470 | 216 | 45.96% |
| 3 | 17 WORM CREEK | 471 | 209 | 44.37% |
| 4 | 01 PRESTON | 601 | 263 | 43.76% |
| 5 | 15 WESTON | 599 | 261 | 43.57% |
| 6 | 05 PRESTON | 590 | 257 | 43.56% |
| 7 | 04 PRESTON | 483 | 209 | 43.27% |
| 8 | 08 DAYTON | 501 | 216 | 43.11% |
| 9 | 09 FAIRVIEW | 563 | 239 | 42.45% |
| 10 | 03 PRESTON | 512 | 217 | 42.38% |
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 Idaho voter file
How Franklin County voted for president
■ Democratic % ■ Republican % · 2024 total votes cast: 7,184
Election results are public records.
Source: Official county canvasses via MIT Election Data + Science Lab
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