2026 midterms · South Dakota · November 3
South Dakota at-large House race 2026
Who’s running for U.S. House in South Dakota’s at-large seat on November 3, 2026: Nicole "Nikki" Gronli (D) and Marty Jackley (R). Open seat, now held by Dusty Johnson (R). Forecasters: Solid R (average of 4).
How to vote in South Dakota: check your registration on South Dakota’s election website · deadlines on Vote.gov for South Dakota
Next to a Democrat in Congress, $ backing is their backing from the pro-Israel PACs we track, 2016–2026; $0 backing means none. Tap a name for each PAC by year, with FEC links.
| Race | Rating | Democrats | Republicans | Others on the ballot | Notes |
|---|---|---|---|---|---|
| South Dakota at-large | Solid R Average of 4; all agree Each forecaster for South Dakota at-large
|  Nicole "Nikki" Gronli | Marty Jackley | No one else listed | Open seat · Now held by Dusty Johnson (R) |
Help Democrats across South Dakota: South Dakota Democratic Party · See it on the map (South Dakota)
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Questions and answers
Who is running for U.S. House in South Dakota’s at-large seat in 2026?
On the November 3, 2026 ballot: Nicole "Nikki" Gronli (D) and Marty Jackley (R).
When is the 2026 election for U.S. House in South Dakota’s at-large seat?
Election Day is Tuesday, November 3, 2026.
Who is favored in the 2026 race for U.S. House in South Dakota’s at-large seat?
The nonpartisan forecasters we track rate it Solid R on average (4 forecasters; they all agree). These are their ratings, not our prediction.
How do I vote in South Dakota?
Check your registration on South Dakota’s election website and the registration deadlines on Vote.gov; both are linked on this page.
Where this comes from
Candidates as of October 9, 2026, from state election offices, news reports and Ballotpedia’s candidate lists; independent and minor-party candidates may not be complete. Ratings are the average of up to seven nonpartisan forecasters, read from the tables Wikipedia editors keep of them: how we average them and each forecaster’s own pages. Backing is contributions plus outside spending for a candidate by the pro-Israel PACs we track, from FEC filings (method). Results, on election night, only from AP or official sources. Found an error? Tell us.
Photos of members of Congress: official portraits (public domain). Other photos: Nicole "Nikki" Gronli: USDA Media by Christopher Freeman (photo of Nicole "Nikki" Gronli), Public domain.