RepublicanIn office since Jan 2005

John Thune

U.S. Senator from South Dakota since 2005. Ran in 8 elections between 1996 and 2022, winning 7. Next on the ballot in 2028.

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Nov 7, 2026, 3:00 PM ET

Committees

119th Congress.

Senate Committee on Agriculture, Nutrition, and ForestryCommodities, Derivatives, Risk Management, and TradeConservation, Forestry, Natural Resources, and BiotechnologyLivestock, Dairy, Poultry, and Food Safety
Senate Committee on Commerce, Science, and TransportationAviation, Space, and InnovationTelecommunications and MediaConsumer Protection, Technology, and Data PrivacySurface Transportation, Freight, Pipelines, and Safety
Senate Committee on FinanceHealth CareInternational Trade, Customs, and Global CompetitivenessTaxation and IRS Oversight
Senate Select Committee on Intelligence · Ex Officio

Source: congress-legislators committeesUpdated Nov 7, 2026, 3:00 PM ET

119th Congress · 55 sponsored · 1 became law

BillIntroCmteSenateHouseLaw

S 723 Tribal Trust Land Homeownership Act of 2025
Native Americans · Became law May 2026

Source: Congress.gov billsUpdated Nov 6, 2026, 3:27 PM ET

119th Congress · placement by roll-call votes

Thune is closer to the center than 82% of the chamber's Republicans.

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:06 PM ET

Black tick: the average of Republicans in the U.S. Senate.

Votes chosen for their effect, not their side: Thune’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.

Date	Bill	Thune	Rep. majority	Dem. majority	Result
Jun 5, 2026	S 2: Secure America Act	Yes	Yes	No	Passed 52–47
Apr 16, 2026	HJRES 140: Providing for congressional disapproval under chapter 8 of title 5, United States Code,…	Yes	Yes	No	Passed 50–49
Feb 12, 2026	HJRES 142: Disapproving the action of the District of Columbia Council in approving the D.C.…	Yes	Yes	No	Passed 49–47
Jan 30, 2026	HR 7148: Consolidated Appropriations Act, 2026	Yes	Yes	No	Passed 71–29
Dec 4, 2025	HJRES 131: Providing for congressional disapproval under chapter 8 of title 5, United States Code,…	Yes	Yes	No	Passed 49–45

Offices held, and every time Thune was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.

Year	Race	Result	Margin	Seat	+/−
2022	U.S. Senate, South Dakota	Won	R+43.5	R+26.9	+16.6
2016	U.S. Senate, South Dakota	Won	R+43.7	R+31.9	+11.8
2010	U.S. Senate, South Dakota	Won	—	R+8.6	—
2004	U.S. Senate, South Dakota	Won	R+1.2	R+21.8	−20.6
2002	U.S. Senate, South Dakota	Lost	D+0.2	R+23.2	−23.4
2000	U.S. House, SD-AL	Won	R+48.5	R+23.2	+25.3
1998	U.S. House, SD-AL	Won	R+50.2	R+3.9	+46.3
1996	U.S. House, SD-AL	Won	R+20.7	R+3.9	+16.8