Republican Party primaries in South Dakota, 2026
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← 2024
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| Republican Party primaries, 2026 |
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| Primary Date |
| June 2, 2026 |
| Primary Runoff Date |
| July 28, 2026 |
| Federal elections |
| Republican primaries for U.S. House |
| State party |
| Republican Party of South Dakota |
| State political party revenue |
This page focuses on the Republican primaries that will take place in South Dakota on June 2, 2026.
A primary election is an election in which registered voters select a candidate that they believe should be a political party's candidate for elected office to run in the general election. They are also used to choose convention delegates and party leaders. Primaries are state-level and local-level elections that take place prior to a general election. South Dakota law allows parties to choose whether to let unaffiliated voters vote in their elections. For more information on recognized political parties in South Dakota and their primary policies, see here.[1][2]
For information about which offices are nominated via primary election, see this article.
Federal elections
U.S. Senate
A Republican Party primary takes place on June 2, 2026, in South Dakota to determine which Republican candidate will run in the state's general election on November 5, 2024.
U.S. House
The U.S. House of Representatives election in South Dakota is scheduled on November 3, 2026. Voters will elect one candidate to serve in the U.S. House from the state's one at-large U.S. House district. The primary is June 2, 2026. The filing deadline is March 31, 2026.
State elections
State Senate
South Dakota State Senate elections, 2026 |
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House of Representatives
South Dakota House of Representatives elections, 2026 |
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| District 35 (2 seats) | |||
State executive offices
Eight state executive offices are up for election in South Dakota in 2026:
Governor
Lieutenant Governor
Attorney General
Secretary of State
Auditor
Commissioner of School and Public Lands
Treasurer
Public Utilities Commission
In South Dakota, political parties select their state executive candidates at conventions rather than through primaries, with the governor being the only exception. As of October 2025, the dates of the conventions had not yet been announced.
Governor of South Dakota
Republican primary candidatesNote: The candidate list in this election may not be complete.
Voting information
- See also: Voting in South Dakota
Ballotpedia will publish the dates and deadlines related to this election as they are made available.
Context of the 2026 elections
South Dakota Party Control: 1992-2025
No Democratic trifectas • Thirty-two years of Republican trifectas
Scroll left and right on the table below to view more years.
| Year | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Governor | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
| Senate | R | D | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
| House | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
State party overview
Republican Party of South Dakota
- See also: Republican Party of South Dakota
State political party revenue
State political parties typically deposit revenue in separate state and federal accounts in order to comply with state and federal campaign finance laws.
The Democratic Party and the Republican Party maintain state affiliates in all 50 states, the District of Columbia, and select U.S. territories. The following map displays total state political party revenue per capita for the Republican state party affiliates.
Pivot Counties
- See also: Pivot Counties by state
Five of 66 South Dakota counties—7.6 percent—are Pivot Counties. Pivot Counties are counties that voted for Barack Obama (D) in 2008 and 2012 and for Donald Trump (R) in 2016. Altogether, the nation had 206 Pivot Counties, with most being concentrated in upper midwestern and northeastern states.
| Counties won by Trump in 2016 and Obama in 2012 and 2008 | |||||||
|---|---|---|---|---|---|---|---|
| County | Trump margin of victory in 2016 | Obama margin of victory in 2012 | Obama margin of victory in 2008 | ||||
| Corson County, South Dakota | 4.51% | 11.08% | 21.48% | ||||
| Day County, South Dakota | 23.77% | 6.16% | 12.89% | ||||
| Marshall County, South Dakota | 15.51% | 8.66% | 16.48% | ||||
| Roberts County, South Dakota | 15.53% | 9.84% | 19.64% | ||||
| Ziebach County, South Dakota | 1.96% | 16.43% | 27.16% | ||||
In the 2016 presidential election, Donald Trump (R) won South Dakota with 61.5 percent of the vote. Hillary Clinton (D) received 31.7 percent. In presidential elections between 1900 and 2016, South Dakota cast votes for the winning presidential candidate 63.3 percent of the time. In that same time frame, South Dakota supported Republican candidates for president more often than Democratic candidates, 86.7 to 10.0 percent. The state favored Republicans in every presidential election between 2000 and 2016.
Presidential results by legislative district
The following table details results of the 2012 and 2016 presidential elections by state House districts in South Dakota. Click [show] to expand the table. The "Obama," "Romney," "Clinton," and "Trump" columns describe the percent of the vote each presidential candidate received in the district. The "2012 Margin" and "2016 Margin" columns describe the margin of victory between the two presidential candidates in those years. The "Party Control" column notes which party held that seat heading into the 2018 general election. Data on the results of the 2012 and 2016 presidential elections broken down by state legislative districts was compiled by Daily Kos.[3][4]
| In 2012, Barack Obama (D) won six out of 37 state House districts in South Dakota with an average margin of victory of 19.9 points. In 2016, Hillary Clinton (D) won four out of 37 state House districts in South Dakota with an average margin of victory of 12.7 points. Clinton won one district controlled by a Republican heading into the 2018 elections. |
| In 2012, Mitt Romney (R) won 31 out of 37 state House districts in South Dakota with an average margin of victory of 22.4 points. In 2016, Donald Trump (R) won 33 out of 37 state House districts in South Dakota with an average margin of victory of 32.5 points. Trump won five districts controlled by Democrats heading into the 2018 elections. |
| 2016 presidential results by state House district | |||||||
|---|---|---|---|---|---|---|---|
| District | Obama | Romney | 2012 Margin | Clinton | Trump | 2016 Margin | Party Control |
| 1 | 51.58% | 46.48% | D+5.1 | 37.24% | 57.24% | R+20 | D |
| 2 | 41.78% | 55.63% | R+13.8 | 28.47% | 65.46% | R+37 | R |
| 3 | 44.43% | 52.39% | R+8 | 33.93% | 59.00% | R+25.1 | R |
| 4 | 40.82% | 56.54% | R+15.7 | 27.54% | 66.02% | R+38.5 | R |
| 5 | 39.90% | 58.16% | R+18.3 | 27.89% | 65.65% | R+37.8 | R |
| 6 | 38.47% | 59.68% | R+21.2 | 30.89% | 61.65% | R+30.8 | R |
| 7 | 50.40% | 46.81% | D+3.6 | 43.62% | 47.39% | R+3.8 | D |
| 8 | 43.39% | 54.25% | R+10.9 | 32.58% | 61.26% | R+28.7 | R |
| 9 | 44.78% | 52.69% | R+7.9 | 35.24% | 57.43% | R+22.2 | R |
| 10 | 42.73% | 55.52% | R+12.8 | 34.89% | 58.46% | R+23.6 | R |
| 11 | 42.02% | 56.19% | R+14.2 | 36.63% | 56.47% | R+19.8 | R |
| 12 | 43.37% | 54.72% | R+11.3 | 40.26% | 52.71% | R+12.4 | R |
| 13 | 42.42% | 55.91% | R+13.5 | 42.90% | 50.51% | R+7.6 | R |
| 14 | 45.37% | 53.02% | R+7.7 | 42.55% | 50.96% | R+8.4 | R |
| 15 | 60.76% | 36.19% | D+24.6 | 50.37% | 40.21% | D+10.2 | D |
| 16 | 37.11% | 61.13% | R+24 | 28.21% | 66.43% | R+38.2 | R |
| 17 | 46.23% | 51.48% | R+5.3 | 38.71% | 54.73% | R+16 | D |
| 18 | 42.37% | 55.09% | R+12.7 | 34.30% | 58.81% | R+24.5 | R |
| 19 | 30.80% | 67.46% | R+36.7 | 21.26% | 73.69% | R+52.4 | R |
| 20 | 39.03% | 58.77% | R+19.7 | 28.66% | 65.65% | R+37 | R |
| 21 | 32.69% | 65.58% | R+32.9 | 21.75% | 74.28% | R+52.5 | D |
| 22 | 40.25% | 57.55% | R+17.3 | 28.05% | 65.80% | R+37.8 | R |
| 23 | 27.77% | 70.13% | R+42.4 | 17.94% | 77.32% | R+59.4 | R |
| 24 | 31.98% | 66.03% | R+34.1 | 26.93% | 66.80% | R+39.9 | R |
| 25 | 39.10% | 58.97% | R+19.9 | 31.43% | 61.88% | R+30.4 | D |
| 26A | 71.98% | 26.91% | D+45.1 | 62.07% | 31.66% | D+30.4 | D |
| 26B | 38.65% | 59.41% | R+20.8 | 27.43% | 66.49% | R+39.1 | R |
| 27 | 59.61% | 39.08% | D+20.5 | 51.30% | 43.71% | D+7.6 | R |
| 28A | 59.49% | 38.69% | D+20.8 | 48.66% | 46.00% | D+2.7 | D |
| 28B | 21.01% | 75.69% | R+54.7 | 13.67% | 79.93% | R+66.3 | R |
| 29 | 26.65% | 70.23% | R+43.6 | 18.53% | 73.59% | R+55.1 | R |
| 30 | 28.42% | 68.70% | R+40.3 | 22.14% | 71.69% | R+49.5 | R |
| 31 | 34.98% | 61.85% | R+26.9 | 28.34% | 62.58% | R+34.2 | R |
| 32 | 37.98% | 59.43% | R+21.5 | 33.81% | 56.85% | R+23 | R |
| 33 | 32.89% | 64.91% | R+32 | 28.15% | 64.55% | R+36.4 | R |
| 34 | 34.28% | 63.64% | R+29.4 | 32.46% | 59.35% | R+26.9 | R |
| 35 | 35.21% | 61.55% | R+26.3 | 26.34% | 64.40% | R+38.1 | R |
| Total | 39.87% | 57.89% | R+18 | 31.74% | 61.53% | R+29.8 | - |
| Source: Daily Kos | |||||||
See also
2026 Elections
External links
Footnotes
- ↑ NCSL,"State Primary Election Types," accessed September 25, 2024
- ↑ South Dakota Legislature,"Codified Laws § 12-6-26," accessed September 25, 2024
- ↑ Daily Kos, "Daily Kos Elections' statewide election results by congressional and legislative districts," July 9, 2013
- ↑ Daily Kos, "Daily Kos Elections' 2016 presidential results for congressional and legislative districts," February 6, 2017
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