State legislatures / South Dakota


South Dakota

Who holds power, the 2026 results and the next elections

Who holds power

Republican trifecta

Governor Larry Rhoden, Republican, since January 25, 2025

HouseRepublican majority
Democrats 5Republicans 65
SenateRepublican majority
Democrats 3Republicans 32

Control counts seats by party; coalitions and power-sharing agreements are not shown.

Office holders as of November 3, 2026 (Open States), before the winners of the November 3, 2026 elections take office.

2026 results

US SenateMike Rounds Republican, called by DDHQ, November 4, 2026
Mike Rounds (R)60.5%
Brian Bengs (I)39.5%

100% counted; count: South Dakota Secretary of State.

GovernorLarry Rhoden Republican, called by civicAPI, November 9, 2026
Larry Rhoden (R)63.5%
Dan Ahlers (D)36.5%

100% counted; count: South Dakota Secretary of State.

US House

Called D 0Called R 1Not called 0
  1. ALMarty Jackley64.0-36.0R, civicAPI

Calls as of Nov 9, 2:07 am ET (7:07 am UK): AP, Decision Desk HQ, civicAPI and PollCheck House calls, as on the midterms pages.

US senators: John Thune (Republican, term ends 2029); Mike Rounds (Republican, term ends 2027).

Members of Congress as of November 4, 2026 (congress-legislators).

Next elections

  1. June 6, 20282028 primary electionNominates for the 2028 general election
  2. November 7, 20282028 general electionPresident, US House, US Senate

Date not set: 2028 presidential primary (President).

Scheduled statewide and federal elections, November 5, 2026 to December 31, 2028; calendar checked November 4, 2026.

2024 president

Trump by 29.2 points

34.2% HarrisTrump 63.4%

146,859 and 272,081 votes; other candidates 9,982 (2.3%), 428,922 in all. The tick marks half of all votes.

Electoral votes: Trump 3.

MEDSL 2024 state presidential returns: a fixed historic release; the file records no release date.

Statewide officials

Office OfficialPartySince
Lieutenant governorTony VenhuizenRepublicanJanuary 30, 2025
Attorney generalMarty JackleyRepublicanJanuary 2, 2023
Secretary of stateMonae JohnsonRepublicanNot available

Office holders as of November 3, 2026 (Open States), before the winners of the November 3, 2026 elections take office.

Terms and maps

Office TermTerm limit
Governor4 yearsConsecutive: two consecutive terms
Senate2 yearsConsecutive: four consecutive terms (eight consecutive years)
House of Representatives2 yearsConsecutive: four consecutive terms (eight consecutive years)
Next regular governor election2030
Congressional maps drawn byNot applicable (one at-large seat)
Legislative maps drawn byThe legislature
2026 congressional mapNo change listed

Terms and maps checked November 4, 2026.

Supreme court

CourtJusticesSelectionTerm
South Dakota Supreme Court5Appointed, then retention elections8 years

Court facts checked November 4, 2026.

Voter registration

Party registration: not available.

Registration data built November 9, 2026.

Questions

Which party controls the South Dakota legislature?

As of November 3, 2026, before the winners of the November 3, 2026 elections take office: Republicans hold 65 of the 70 seats in the House (36 for a majority); Republicans hold 32 of the 35 seats in the Senate (18 for a majority).

Who is the governor of South Dakota?

Larry Rhoden (Republican), in office since January 25, 2025, as of November 3, 2026.

When is the next statewide election in South Dakota?

The 2028 primary election, on June 6, 2028.

Sources

Officials and legislators: Open States (CC0 1.0), commit 3a1d876 of November 3, 2026; seat totals from openstates-metadata (MIT).

Office cross-checks: National Lieutenant Governors Association; National Association of Secretaries of State roster, read November 4, 2026.

Congress: unitedstates/congress-legislators (CC0 1.0), retrieved November 4, 2026.

2026 counts and calls: PollCheck midterms results files (Associated Press, Decision Desk HQ, civicAPI, official feeds, PollCheck House calls).

2024 president: MIT Election Data and Science Lab (CC0 1.0); electoral votes: Wikipedia (CC BY-SA 4.0).

Terms, maps, election dates and courts (public records): S.D. Const. art. IV, s. 2; S.D. Const. art. III, s. 6; U.S. Census Bureau, 2020 Census Apportionment Results, Table 1; S.D. Const. art. III, s. 5; SDCL 12-2-1; 3 U.S.C. s. 21(1); 2 U.S.C. s. 1 and the U.S. Senate Class III list; 3 U.S.C. s. 21(1); South Dakota Unified Judicial System, Supreme Court page; S.D. Const. art. V, s. 7; SDCL 16-1-2; SDCL 16-1-2.1; SDCL 16-1-4.1; South Dakota Unified Judicial System, Justices.

2026 congressional maps: Wikipedia, 2025–2026 United States redistricting (CC BY-SA 4.0).

Data through November 3, 2026.