2026 midterms · Montana
12 of 56 counties have more registrations than the Census counts adult citizens; 10 of them by more than the Census margin of error.
Registrations ÷ Census adult citizens
92.8%
808,879 Registered Voters against 871,182 ± 979 adult citizens
Counties over 100%
12 of 56
10 beyond the Census margin of error
Swing since 2024
Waiting
The US Senate race went beyond the two parties; see the swing section.
Turnout
61.1%
Votes Cast ÷ registrations
Results: Montana’s results site reports all 728 precincts, unofficial, as of November 11. Source
Certification: Counties finish their canvasses by November 17; the state canvass is set for November 30. Source
Registration file: Registered Voters. Secretary of State results site, Voter Turnout page for the November 3, 2026 General Election (no date given; exported November 11, 2026).
Next, November 17: county canvasses finish. Source
Next, November 30: the state canvass. Source
Montana’s file gives one registration number, “Registered Voters”, and does not say whether inactive registrations are included.
Each county is colored by its registrations (Registered Voters) as a share of the Census count of its adult citizens. Gray is 100% or less; the amber steps are over 100%, darker for more.
| County | Registrations ÷ adult citizens | Registrations | Adult citizens | Swing since 2024 | Turnout |
|---|---|---|---|---|---|
| Beaverhead County | 93.2% | 7,331 | 7,864 | — | 62.5% |
| Big Horn County | 86.0% | 7,564 | 8,795 | — | 46.9% |
| Blaine County | 83.8% | 4,084 | 4,875 | — | 55.4% |
| Broadwater County | 102.8% | 6,283 | 6,110 | — | 60.0% |
| Carbon County | 101.3% | 9,282 | 9,163 | — | 66.8% |
| Carter County | 93.4% | 1,003 | 1,074 | — | 71.5% |
| Cascade County | 80.8% | 52,650 | 65,152 | — | 56.6% |
| Chouteau County | 80.9% | 3,698 | 4,571 | — | 62.6% |
| Custer County | 79.1% | 7,524 | 9,518 | — | 58.4% |
| Daniels County | 95.1% | 1,154 | 1,214 | — | 71.6% |
| Dawson County | 82.4% | 5,710 | 6,933 | — | 60.1% |
| Deer Lodge County | 74.1% | 6,254 | 8,443 | — | 65.0% |
| Fallon County | 85.5% | 1,802 | 2,108 | — | 67.4% |
| Fergus County | 89.2% | 8,188 | 9,182 | — | 66.8% |
| Flathead County | 102.9% | 88,047 | 85,543 | — | 60.5% |
| Gallatin County | 101.6% | 99,945 | 98,326 | — | 58.2% |
| Garfield County | 107.3% | 881 | 821 | — | 75.3% |
| Glacier County | 84.3% | 7,955 | 9,432 | — | 51.1% |
| Golden Valley County | 83.6% | 613 | 733 | — | 64.3% |
| Granite County | 96.5% | 2,794 | 2,895 | — | 66.1% |
| Hill County | 81.6% | 9,399 | 11,517 | — | 55.3% |
| Jefferson County | 100.9% | 10,276 | 10,189 | — | 67.1% |
| Judith Basin County | 103.4% | 1,610 | 1,557 | — | 73.0% |
| Lake County | 91.8% | 23,001 | 25,066 | — | 61.6% |
| Lewis and Clark County | 94.3% | 54,179 | 57,453 | — | 65.1% |
| Liberty County | 84.3% | 1,174 | 1,393 | — | 66.7% |
| Lincoln County | 90.0% | 15,310 | 17,013 | — | 64.9% |
| McCone County | 93.1% | 1,264 | 1,358 | — | 69.1% |
| Madison County | 104.7% | 7,976 | 7,620 | — | 66.8% |
| Meagher County | 82.6% | 1,454 | 1,760 | — | 64.4% |
| Mineral County | 105.5% | 4,140 | 3,925 | — | 59.0% |
| Missoula County | 96.6% | 93,866 | 97,174 | — | 66.4% |
| Musselshell County | 95.3% | 3,903 | 4,094 | — | 63.0% |
| Park County | 101.4% | 14,760 | 14,561 | — | 65.6% |
| Petroleum County | 96.9% | 371 | 383 | — | 69.3% |
| Phillips County | 83.6% | 2,646 | 3,164 | — | 65.4% |
| Pondera County | 83.3% | 3,793 | 4,551 | — | 59.6% |
| Powder River County | 86.7% | 1,237 | 1,426 | — | 73.1% |
| Powell County | 67.2% | 4,092 | 6,086 | — | 64.6% |
| Prairie County | 79.9% | 827 | 1,035 | — | 73.2% |
| Ravalli County | 98.0% | 36,987 | 37,740 | — | 66.5% |
| Richland County | 92.6% | 7,595 | 8,198 | — | 48.8% |
| Roosevelt County | 86.1% | 6,038 | 7,009 | — | 42.7% |
| Rosebud County | 87.9% | 5,046 | 5,742 | — | 55.9% |
| Sanders County | 100.7% | 11,066 | 10,986 | — | 60.8% |
| Sheridan County | 85.2% | 2,392 | 2,809 | — | 67.5% |
| Silver Bow County | 85.4% | 24,213 | 28,361 | — | 62.0% |
| Stillwater County | 100.7% | 7,288 | 7,236 | — | 62.8% |
| Sweet Grass County | 98.9% | 2,935 | 2,967 | — | 66.5% |
| Teton County | 91.0% | 4,329 | 4,755 | — | 67.2% |
| Toole County | 68.2% | 2,661 | 3,900 | — | 61.0% |
| Treasure County | 90.0% | 533 | 592 | — | 68.9% |
| Valley County | 90.6% | 5,252 | 5,800 | — | 60.1% |
| Wheatland County | 91.5% | 1,465 | 1,601 | — | 59.4% |
| Wibaux County | 84.6% | 707 | 836 | — | 67.8% |
| Yellowstone County | 87.4% | 112,332 | 128,573 | — | 57.0% |
A race beyond the two parties: In Montana’s US Senate race, candidates other than the Democrat and the Republican together drew 193,577 votes, more than the Democrat’s 59,960. The swing is drawn from races where the Democrat and the Republican each drew more votes than all other candidates together, so this map waits for another race by county.
Alphabetical. Each entry gives the county’s registrations against the Census count of adult citizens, its ballots, and its swing since 2024, with the file each figure comes from.
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Ballots: Votes Cast. Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT (file).
Every figure on this page is computed from the files listed below when the page is built. The registration count is the state’s own, under the state’s own label. The adult-citizen count is the Census Bureau’s citizen voting-age population from its special tabulation of the American Community Survey for 2020 to 2024, which carries a margin of error for every area; a county is “over within the margin” when its registrations pass the estimate by less than that margin.
The ratio to all adults uses the Census Bureau’s Vintage 2025 estimates of every resident of voting age, citizen or not, as of July 2025. Turnout is ballots cast divided by registrations, using the state’s own label for its ballots count; where a state publishes no ballots count, the votes in the race shown stand in, and the entry says so.
The swing is the Democratic share of the two-party vote in the 2026 race shown, minus the Democratic share in the 2024 presidential race, in percentage points. The race is the US Senate where the Democrat and the Republican each drew more votes than all other candidates together; otherwise the governor’s race; otherwise the US House, summed over each county’s contested districts. Votes are counted on the Democratic and Republican lines only; votes for the same candidates on other party lines are counted with the other candidates. Under ranked choice, first choices are used. The 2024 baseline is the MIT Election Data and Science Lab’s county file.
These pages describe the numbers. They are kept apart from the tests we registered in advance for our own analysis of the 2026 returns. Unofficial results move during the canvass; each figure carries the time of the file it came from, and the pages are rebuilt as states certify and post new registration files.
| What | File | As of |
|---|---|---|
| Registration: Registered Voters | electionresults.mt.gov | Secretary of State results site, Voter Turnout page for the November 3, 2026 General Election (no date given; exported November 11, 2026) |
| 2026 ballots: Votes Cast (unofficial) | electionresults.mt.gov | Voter Turnout export, unofficial, downloaded November 11, 2026, 3:14 a.m. MT |
| Census adult citizens (CVAP), ACS 2020–2024 special tabulation | www2.census.gov | published 2026 |
| Census adult residents, Vintage 2025 estimates | www2.census.gov | July 1, 2025 |
| 2024 president by county, MIT Election Data and Science Lab | doi.org | certified 2024 returns |