KNOW YOUR SENATOR

South Dakota — U.S. Senators

South Dakota is represented in the U.S. Senate by Mike Rounds and John Thune. Their voting records, committees, contact details, and election results are below.

Mike Rounds

Mike Rounds R

U.S. Senator, South Dakota

Next election: November 2026 · current term ends 2027-01-03

42%of eligible voters actively chose them
63%turnout (2020)
93%voted on the prevailing side

How they won (2020)

MIKE ROUNDS (R) won with 276,232 votes, over DAN AHLERS (D) with 143,987. 420,219 votes were cast out of an estimated 662,330 eligible citizens — meaning 37% of eligible voters did not vote in this race.

Contact

District offices

  • Pierre, SD 57501 — 111 W. Capitol Ave., Suite 210 · 605-224-1450
  • Sioux Falls, SD 57104 — 320 N. Main Ave., Suite A · 605-336-0486
  • Aberdeen, SD 57401 — 221 Brown County Highway 19 S, Suite 112 · 605-225-0366
  • Rapid City, SD 57701 — 603 Omaha St., Suite 100 · 605-343-5035

Committee assignments

  • Senate Committee on Appropriations The Senate Committee on Appropriations is responsible for legislation allocating federal funds prior to expenditure from the treasury. Appropriations are generally limited to the levels set by the Budget Resolution drafted by the Senate Committee on the Budget. The Committee is also responsible for supplemental spending bills, which are sometimes needed in the middle of a fiscal year to compensate for emergency expenses.
  • Senate Committee on Armed Services The Senate Committee on Armed Services has legislative jurisdiction over military and defense.
  • Senate Committee on Banking, Housing, and Urban Affairs The Senate Committee on Banking, Housing, and Urban Affairs not only has legislative jurisdiction on the topics listed in its name, but also on a range of other topics such as economic stability, federal monetary policy, and government contracts.
  • Senate Committee on Indian Affairs The Senate Committee on Indian Affairs has jurisdiction to study the unique problems of American Indian, Native Hawaiian, and Alaska Native peoples and to propose legislation to alleviate these difficulties. These issues include, but are not limited to, Indian education, economic development, land management, trust responsibilities, health care, and claims against the United States. Additionally, all legislation proposed by Members of the Senate that specifically pertains to American Indians, Native Hawaiians, or Alaska Natives is under the jurisdiction of the Committee.
  • Senate Select Committee on Intelligence The Senate Committee on Intelligence was created to study the intelligence activities and programs of the United States Government and report to the Senate concerning such intelligence activities and programs. The Committee is also responsible for proposing legislation and providing legislative oversight to ensure that intelligence activities of the United States are in conformity with the Constitution and the law.
  • Commission on Security and Cooperation in Europe

Recent roll-call votes

  • NayA joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Centers for Medicare & Medicaid Services of the Department of Health and Human Services relating to "Medicare Program; Implementation of Prior Authorization for Select Services for the Wasteful and Inappropriate Services Reduction (WISeR) Model". — On the Motion to Proceed S.J.Res. 198 (July 16, 2026, 01:25 PM; Motion to Proceed Rejected; outcome matched their vote)
  • YeaKara Marie Westercamp, of Virginia, to be a Judge of the United States Court of International Trade — On the Cloture Motion PN851-8 (July 16, 2026, 11:44 AM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaJeffrey T. Kuntz, of Florida, to be United States District Judge for the Southern District of Florida — On the Nomination PN930-4 (July 15, 2026, 02:00 PM; Nomination Confirmed; outcome matched their vote)
  • YeaJeffrey T. Kuntz, of Florida, to be United States District Judge for the Southern District of Florida — On the Cloture Motion PN930-4 (July 15, 2026, 11:50 AM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaAn original bill to authorize appropriations for fiscal year 2027 for military activities of the Department of Defense, for military construction, and for defense activities of the Department of Energy, to prescribe military personnel strengths for such fiscal year, and for other purposes. — On Cloture on the Motion to Proceed S. 4784 (July 14, 2026, 02:41 PM; Cloture on the Motion to Proceed Rejected; outcome went against their vote)
  • YeaMatthew A. Schwartz, of New York, to be United States Circuit Judge for the Second Circuit — On the Nomination PN938-2 (July 14, 2026, 11:50 AM; Nomination Confirmed; outcome matched their vote)
  • YeaArthur Roberts Jones, of Texas, to be United States District Judge for the Southern District of Texas — On the Nomination PN930-3 (July 13, 2026, 05:31 PM; Nomination Confirmed; outcome matched their vote)
  • NayA joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress. — On the Motion to Proceed S.J.Res. 185 (June 24, 2026, 10:30 PM; Motion to Proceed Rejected; outcome matched their vote)
  • YeaMatthew A. Schwartz, of New York, to be United States Circuit Judge for the Second Circuit — On the Cloture Motion PN938-2 (June 24, 2026, 10:09 PM; Cloture Motion Agreed to; outcome matched their vote)
  • NayA joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Department of Education relating to "Reimagining and Improving Student Education-Federal Student Loan Program Final Regulations". — On the Motion to Proceed S.J.Res. 196 (June 24, 2026, 09:16 PM; Motion to Proceed Rejected; outcome matched their vote)
  • YeaArthur Roberts Jones, of Texas, to be United States District Judge for the Southern District of Texas — On the Cloture Motion PN930-3 (June 24, 2026, 06:28 PM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaMichael J. Hendershot, of Ohio, to be United States District Judge for the Northern District of Ohio — On the Nomination PN930-2 (June 24, 2026, 05:24 PM; Nomination Confirmed; outcome matched their vote)
  • YeaMichael J. Hendershot, of Ohio, to be United States District Judge for the Northern District of Ohio — On the Cloture Motion PN930-2 (June 24, 2026, 02:57 PM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaJohn George Edward Marck, of Texas, to be United States District Judge for the Southern District of Texas — On the Nomination PN930-7 (June 24, 2026, 02:17 PM; Nomination Confirmed; outcome matched their vote)
  • YeaJohn George Edward Marck, of Texas, to be United States District Judge for the Southern District of Texas — On the Cloture Motion PN930-7 (June 24, 2026, 11:39 AM; Cloture Motion Agreed to; outcome matched their vote)
  • NayA concurrent resolution directing the President, pursuant to section 5(c) of the War Powers Resolution, to remove United States Armed Forces from hostilities with Iran. — On the Concurrent Resolution H.Con.Res. 86 (June 23, 2026, 03:01 PM; Concurrent Resolution Agreed to; outcome went against their vote)
  • YeaDarrell Owens, of Pennsylvania, to be U.S. Representative to the Organization for Security and Cooperation in Europe, with the rank of Ambassador — On the Nomination PN859-3 (June 23, 2026, 02:15 PM; Nomination Confirmed; outcome matched their vote)
  • YeaA bill a bill to increase the supply of housing in America, and for other purposes. — On the Motion (Motion to Concur in the House Amendment to the Senate Amendment to H.R. 6644 with an Amendment (SA 5823)) (June 22, 2026, 05:40 PM; Motion Agreed to; outcome matched their vote)
  • YeaGeorge Holding, of North Carolina, to be United States Director of the European Bank for Reconstruction and Development — On the Nomination PN730-33 (June 18, 2026, 01:40 PM; Nomination Confirmed; outcome matched their vote)
  • YeaA bill a bill to increase the supply of housing in America, and for other purposes. — On the Cloture Motion H.R. 6644 (June 18, 2026, 11:01 AM; Cloture Motion Agreed to; outcome matched their vote)
  • NayA resolution requesting information on Honduras's human rights practices pursuant to section 502B(c) of the Foreign Assistance Act of 1961. — On the Motion to Discharge S.Res. 616 (June 17, 2026, 04:27 PM; Motion to Discharge Rejected; outcome matched their vote)
  • YeaGeorge Holding, of North Carolina, to be United States Director of the European Bank for Reconstruction and Development — On the Cloture Motion PN730-33 (June 17, 2026, 03:04 PM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaMichelle Steel, of California, to be Ambassador to the Republic of Korea — On the Nomination PN901-8 (June 17, 2026, 02:15 PM; Nomination Confirmed; outcome matched their vote)
  • YeaMichelle Steel, of California, to be Ambassador to the Republic of Korea — On the Cloture Motion PN901-8 (June 17, 2026, 11:48 AM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaA bill a bill to increase the supply of housing in America, and for other purposes. — On the Motion to Proceed H.R. 6644 (June 16, 2026, 04:52 PM; Motion to Proceed Agreed to; outcome matched their vote)
  • NayA joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress. — On the Motion to Discharge S.J.Res. 172 (June 16, 2026, 03:01 PM; Motion to Discharge Rejected; outcome matched their vote)
  • NayA joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Executive Office for Immigration Review relating to "Appellate Procedures for the Board of Immigration Appeals". — On the Motion to Proceed S.J.Res. 190 (June 16, 2026, 11:44 AM; Motion to Proceed Rejected; outcome matched their vote)
  • YeaJustin D. Smith, of Missouri, to be United States Circuit Judge for the Eighth Circuit — On the Nomination PN851-7 (June 15, 2026, 05:28 PM; Nomination Confirmed; outcome matched their vote)
  • YeaJustin D. Smith, of Missouri, to be United States Circuit Judge for the Eighth Circuit — On the Cloture Motion PN851-7 (June 11, 2026, 01:41 PM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaBrock Dahl, of Maryland, to be Legal Adviser of the Department of State — On the Nomination PN901-4 (June 11, 2026, 11:30 AM; Nomination Confirmed; outcome matched their vote)

This member across the public record

→ Explore Mike Rounds and their district on the interactive map

John Thune

John Thune R

U.S. Senator, South Dakota

Next election: November 2028 · current term ends 2029-01-03

37%of eligible voters actively chose them
53%turnout (2022)
97%voted on the prevailing side

How they won (2022)

JOHN R THUNE (R) won with 242,316 votes, over BRIAN L BENGS (D) with 91,007. 348,020 votes were cast out of an estimated 662,330 eligible citizens — meaning 47% of eligible voters did not vote in this race.

Contact

District offices

  • Rapid City, SD 57701 — 246 Founders Park Dr., Suite 102 · 605-348-7551
  • Sioux Falls, SD 57108 — 2401 West Trevi Place, Suite 200 · 605-334-9596
  • Aberdeen, SD 57401 — 205 6th Avenue SE, Suite 202 · 605-225-8823

Committee assignments

  • Senate Committee on Agriculture, Nutrition, and Forestry The Senate Committee on Agriculture has legislative jurisdiction over agriculture, food, and nutrition.
  • Senate Committee on Commerce, Science, and Transportation The Senate Committee on Commerce, Science, and Transportation has legislative jurisdiction on matters related to science and technology, oceans policy, transportation, communications, and consumer affairs.
  • Senate Committee on Finance The Senate Committee on Finance has legislative jurisdiction on matters relating to taxation, debt, customs, foreign trade, and health programs under the Social Security Act such as Medicare, Medicaid, the Children's Health Insurance Program (CHIP), Temporary Assistance to Needy Families (TANF) and other health and human services programs financed by a specific tax or trust fund.
  • Senate Select Committee on Intelligence — Ex Officio The Senate Committee on Intelligence was created to study the intelligence activities and programs of the United States Government and report to the Senate concerning such intelligence activities and programs. The Committee is also responsible for proposing legislation and providing legislative oversight to ensure that intelligence activities of the United States are in conformity with the Constitution and the law.

Recent roll-call votes

  • NayA joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Centers for Medicare & Medicaid Services of the Department of Health and Human Services relating to "Medicare Program; Implementation of Prior Authorization for Select Services for the Wasteful and Inappropriate Services Reduction (WISeR) Model". — On the Motion to Proceed S.J.Res. 198 (July 16, 2026, 01:25 PM; Motion to Proceed Rejected; outcome matched their vote)
  • YeaKara Marie Westercamp, of Virginia, to be a Judge of the United States Court of International Trade — On the Cloture Motion PN851-8 (July 16, 2026, 11:44 AM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaJeffrey T. Kuntz, of Florida, to be United States District Judge for the Southern District of Florida — On the Nomination PN930-4 (July 15, 2026, 02:00 PM; Nomination Confirmed; outcome matched their vote)
  • YeaJeffrey T. Kuntz, of Florida, to be United States District Judge for the Southern District of Florida — On the Cloture Motion PN930-4 (July 15, 2026, 11:50 AM; Cloture Motion Agreed to; outcome matched their vote)
  • NayAn original bill to authorize appropriations for fiscal year 2027 for military activities of the Department of Defense, for military construction, and for defense activities of the Department of Energy, to prescribe military personnel strengths for such fiscal year, and for other purposes. — On Cloture on the Motion to Proceed S. 4784 (July 14, 2026, 02:41 PM; Cloture on the Motion to Proceed Rejected; outcome matched their vote)
  • YeaMatthew A. Schwartz, of New York, to be United States Circuit Judge for the Second Circuit — On the Nomination PN938-2 (July 14, 2026, 11:50 AM; Nomination Confirmed; outcome matched their vote)
  • YeaArthur Roberts Jones, of Texas, to be United States District Judge for the Southern District of Texas — On the Nomination PN930-3 (July 13, 2026, 05:31 PM; Nomination Confirmed; outcome matched their vote)
  • NayA joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress. — On the Motion to Proceed S.J.Res. 185 (June 24, 2026, 10:30 PM; Motion to Proceed Rejected; outcome matched their vote)
  • YeaMatthew A. Schwartz, of New York, to be United States Circuit Judge for the Second Circuit — On the Cloture Motion PN938-2 (June 24, 2026, 10:09 PM; Cloture Motion Agreed to; outcome matched their vote)
  • NayA joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Department of Education relating to "Reimagining and Improving Student Education-Federal Student Loan Program Final Regulations". — On the Motion to Proceed S.J.Res. 196 (June 24, 2026, 09:16 PM; Motion to Proceed Rejected; outcome matched their vote)
  • YeaArthur Roberts Jones, of Texas, to be United States District Judge for the Southern District of Texas — On the Cloture Motion PN930-3 (June 24, 2026, 06:28 PM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaMichael J. Hendershot, of Ohio, to be United States District Judge for the Northern District of Ohio — On the Nomination PN930-2 (June 24, 2026, 05:24 PM; Nomination Confirmed; outcome matched their vote)
  • YeaMichael J. Hendershot, of Ohio, to be United States District Judge for the Northern District of Ohio — On the Cloture Motion PN930-2 (June 24, 2026, 02:57 PM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaJohn George Edward Marck, of Texas, to be United States District Judge for the Southern District of Texas — On the Nomination PN930-7 (June 24, 2026, 02:17 PM; Nomination Confirmed; outcome matched their vote)
  • YeaJohn George Edward Marck, of Texas, to be United States District Judge for the Southern District of Texas — On the Cloture Motion PN930-7 (June 24, 2026, 11:39 AM; Cloture Motion Agreed to; outcome matched their vote)
  • NayA concurrent resolution directing the President, pursuant to section 5(c) of the War Powers Resolution, to remove United States Armed Forces from hostilities with Iran. — On the Concurrent Resolution H.Con.Res. 86 (June 23, 2026, 03:01 PM; Concurrent Resolution Agreed to; outcome went against their vote)
  • YeaDarrell Owens, of Pennsylvania, to be U.S. Representative to the Organization for Security and Cooperation in Europe, with the rank of Ambassador — On the Nomination PN859-3 (June 23, 2026, 02:15 PM; Nomination Confirmed; outcome matched their vote)
  • YeaA bill a bill to increase the supply of housing in America, and for other purposes. — On the Motion (Motion to Concur in the House Amendment to the Senate Amendment to H.R. 6644 with an Amendment (SA 5823)) (June 22, 2026, 05:40 PM; Motion Agreed to; outcome matched their vote)
  • YeaGeorge Holding, of North Carolina, to be United States Director of the European Bank for Reconstruction and Development — On the Nomination PN730-33 (June 18, 2026, 01:40 PM; Nomination Confirmed; outcome matched their vote)
  • YeaA bill a bill to increase the supply of housing in America, and for other purposes. — On the Cloture Motion H.R. 6644 (June 18, 2026, 11:01 AM; Cloture Motion Agreed to; outcome matched their vote)
  • NayA resolution requesting information on Honduras's human rights practices pursuant to section 502B(c) of the Foreign Assistance Act of 1961. — On the Motion to Discharge S.Res. 616 (June 17, 2026, 04:27 PM; Motion to Discharge Rejected; outcome matched their vote)
  • YeaGeorge Holding, of North Carolina, to be United States Director of the European Bank for Reconstruction and Development — On the Cloture Motion PN730-33 (June 17, 2026, 03:04 PM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaMichelle Steel, of California, to be Ambassador to the Republic of Korea — On the Nomination PN901-8 (June 17, 2026, 02:15 PM; Nomination Confirmed; outcome matched their vote)
  • YeaMichelle Steel, of California, to be Ambassador to the Republic of Korea — On the Cloture Motion PN901-8 (June 17, 2026, 11:48 AM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaA bill a bill to increase the supply of housing in America, and for other purposes. — On the Motion to Proceed H.R. 6644 (June 16, 2026, 04:52 PM; Motion to Proceed Agreed to; outcome matched their vote)
  • NayA joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress. — On the Motion to Discharge S.J.Res. 172 (June 16, 2026, 03:01 PM; Motion to Discharge Rejected; outcome matched their vote)
  • NayA joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Executive Office for Immigration Review relating to "Appellate Procedures for the Board of Immigration Appeals". — On the Motion to Proceed S.J.Res. 190 (June 16, 2026, 11:44 AM; Motion to Proceed Rejected; outcome matched their vote)
  • YeaJustin D. Smith, of Missouri, to be United States Circuit Judge for the Eighth Circuit — On the Nomination PN851-7 (June 15, 2026, 05:28 PM; Nomination Confirmed; outcome matched their vote)
  • YeaJustin D. Smith, of Missouri, to be United States Circuit Judge for the Eighth Circuit — On the Cloture Motion PN851-7 (June 11, 2026, 01:41 PM; Cloture Motion Agreed to; outcome matched their vote)
  • YeaBrock Dahl, of Maryland, to be Legal Adviser of the Department of State — On the Nomination PN901-4 (June 11, 2026, 11:30 AM; Nomination Confirmed; outcome matched their vote)

This member across the public record

→ Explore John Thune and their district on the interactive map

South Dakota congressional districts (U.S. House)