John Thune
U.S. Senator from South Dakota since 2005. Next on the ballot in 2028.
U.S. Senator from South DakotaBorn 1961
- In office
- 21 yrs
- Since 2005
- Bills became law
- 1
- 55 sponsored, 119th Congress
- Votes missed
- 0.1%
- Chamber median 2.1%
- With party
- 98%
- On votes splitting the parties
- Last margin
- +43.5
- Won 2022
- Next election
- 2028
- Nov 7, 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
Legislation
Source: Congress.gov billsUpdated Nov 6, 2026, 3:27 PM ET
Voting record
Where Thune sits in the U.S. Senate
Thune is closer to the center than 82% of the chamber's Republicans.
Closest: Bill Cassidy, Jerry Moran, Darline Graham
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:06 PM ET
With Thune’s party
- Votes with the chamber's Republicans98%
- Cosponsorships of the other party's bills19%
Black tick: the average of Republicans in the U.S. Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
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 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
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.
Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Elections
Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.
| Year | Race | Result | Margin |
|---|---|---|---|
| 2022 | U.S. Senate, South Dakota | Won | R+43.5 |
| 2016 | U.S. Senate, South Dakota | Won | R+43.7 |
| 2010 | U.S. Senate, South Dakota | Won | — |
| 2004 | U.S. Senate, South Dakota | Won | R+1.2 |
| 2002 | U.S. Senate, South Dakota | Lost | D+0.2 |
| 2000 | U.S. House, SD-AL | Won | R+48.5 |
| 1998 | U.S. House, SD-AL | Won | R+50.2 |
| 1996 | U.S. House, SD-AL | Won | R+20.7 |
Source: 99chambers results archive
Seats Thune has held
- U.S. Senate, South Dakota · 2005–2029
- U.S. House, SD-AT-LARGE · 1997–2003
Source: 99chambers results archive
Who Thune has run against
- Brian L. Bengs (D) · 2022 general, won
- Jay Williams (D) · 2016 general, won
- Tom Daschle (D) · 2004 general, won
- Tim Johnson (D) · 2002 general, lost
- Curt Hohn (D) · 2000 general, won
- Jeff Moser (D) · 1998 general, won
Source: 99chambers results archive
How we know Thune
One person, matched across every source we use.
- Bioguide T000250
- FEC S2SD00068
- Wikidata Q462981
- Ballotpedia John Thune
- Vote Smart 398
- GovTrack 400546
- OpenSecrets N00004572
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Nov 7, 2026, 3:00 PM ET