U.S. Senate
Brian Bengs
61.0%222
Mike Rounds
39.0%142
Statewide: Mike Rounds wins. Called.
Buffalo County, South Dakota
2026 election results. Dan Ahlers (D) got 64% of the vote for governor in Buffalo County. The margin is 0.7 points more Republican than the 2024 presidential vote here.
2026 results in Buffalo County
Governor
Dan Ahlers
63.6%241
Larry Rhoden
36.4%138
Statewide: Larry Rhoden wins. Called.
U.S. House: South Dakota at-large
Nicole Gronli
56.1%211
Marty Jackley
43.9%165
Whole district: Marty Jackley wins. Called.
The leader in Buffalo County is only who has the most votes counted here. Races are won statewide or district-wide, and only the race pages report calls. Last vote update here Nov 3, 8:50 PM.
Compared with 2024
| Race | Margin | 2024 president | Shift |
|---|---|---|---|
| SD Governor | D +27.2 | D +27.9 | R +0.7 |
| SD-AL | D +12.2 | — | — |
Margins compare the Democrat and the Republican only. The 2024 column is the presidential margin in the same places as each race's votes here. Shift is this year's margin minus it, shown once at least 90% of the expected vote is counted. A dash means there's no 2024 figure for those exact places.
How Buffalo County has voted for president
| Year | Democrat | Share | Republican | Share | Margin |
|---|---|---|---|---|---|
| 2024 | Kamala Harris | 62.4% | Donald Trump | 35.2% | D +27.3 |
| 2020 | Joe Biden | 64.1% | Donald Trump | 33.3% | D +30.8 |
| 2016 | Hillary Clinton | 60.4% | Donald Trump | 34.9% | D +25.5 |
| 2012 | Barack Obama | 73.6% | Mitt Romney | 25.9% | D +47.7 |
| 2008 | Barack Obama | 74.2% | John McCain | 25.5% | D +48.7 |
| 2004 | John Kerry | 71.7% | George W. Bush | 26.5% | D +45.2 |
| 2000 | Al Gore | 62.7% | George W. Bush | 34.3% | D +28.4 |
Shares are of all presidential votes, and the margin is the Democrat's share minus the Republican's. Since 2000, the presidential margin here has moved R +1.2.
Other counties in South Dakota
South Dakota results- Aurora County
- Beadle County
- Bennett County
- Bon Homme County
- Brookings County
- Brown County
- Brule County
- Butte County
- Campbell County
- Charles Mix County
- Clark County
- Clay County
- Codington County
- Corson County
- Custer County
- Davison County
- Day County
- Deuel County
- Dewey County
- Douglas County
- Edmunds County
- Fall River County
- Faulk County
- Grant County
- Gregory County
- Haakon County
- Hamlin County
- Hand County
- Hanson County
- Harding County
- Hughes County
- Hutchinson County
- Hyde County
- Jackson County
- Jerauld County
- Jones County
- Kingsbury County
- Lake County
- Lawrence County
- Lincoln County
- Lyman County
- Marshall County
- McCook County
- McPherson County
- Meade County
- Mellette County
- Miner County
- Minnehaha County
- Moody County
- Oglala Lakota County
- Pennington County
- Perkins County
- Potter County
- Roberts County
- Sanborn County
- Spink County
- Stanley County
- Sully County
- Todd County
- Tripp County
- Turner County
- Union County
- Walworth County
- Yankton County
- Ziebach County
Sources & scope
Votes for 2026 come from the count this site reads, by county. They're unofficial until South Dakota certifies them. Past presidential votes are from MEDSL and VEST, via Polling Forecast. South Dakota's own results, deadlines and offices are on the state page.