John Thune
Republican · SD · U.S. Senate
Bio
John Randolph Thune is an American politician serving as the senior United States senator from South Dakota, a seat he has held since 2005. A member of the Republican Party, Thune has served since 2025 as Senate majority leader and Senate Republican leader. From 1997 to 2003, Thune served as the U.S. representative for South Dakota's at-large congressional district.
Full bio on Wikipedia →Record of service
- In office
- 27.6 years · not continuous, returned 2005
- Chambers
- House 6y, Senate 21.6y
- First took office
- 1997 (7 terms)
- Seniority
- 15 of 100 by time served
- Age
- 65
- Senate class
- 3 · senior senator
- Assistant Senate Majority Leader · 2019–2021
- Senate Majority Whip · 2021–2021
- Senate Minority Whip · 2021–2025
- Senate Majority Leader · 2025–present
- Rapid City, SD · 605-348-7551
- Sioux Falls, SD · 605-334-9596
- Aberdeen, SD · 605-225-8823
Service history, offices and identifiers from unitedstates/congress-legislators (public domain). Years served sum each term rather than subtracting the first start date, so a break in service is not counted as time in office.
Reported net worth
- Assets
- $330k – $1.1M
- Liabilities
- $10k – $15k
- Net worth
- $315k – $1.1M
- Since 2018
- +$382k
From annual financial disclosures, which report every asset and debt as a bracket — so these are ranges, and the figure shown is their midpoint. A primary residence is not a reportable asset while its mortgage is a reportable debt, which pushes some members negative. How this is calculated →
Overall lean (DW-NOMINATE)
Issue profile
Each issue runs left ↔ right, scored from how the member voted on bills tagged to that issue (−1…+1). Issues with too few votes are blank. Overall lean uses DW-NOMINATE.
How they score against the parties
John Thune's voting record compared with each party's national platform, issue by issue — the same similarity score used across the site.
On the political map
John Thune (the large ringed dot) among every current member of Congress and the party platforms.
Each small dot is a current member (Dem · Rep); the larger dots are party platforms — click one for its closest members. Economic axis: taxes, healthcare, labor, energy. Social axis: abortion, guns, immigration, civil rights, crime.
Do you vote like Thune?
Answer a few questions on the issues and see which members of Congress — and which party — actually line up with you.
Caucuses & committees
Where Thunesits in Congress's own organization — each group's lean is computed from its members' voting records. Explore them all on the caucuses and committees pages.
Committees
- Senate Committee on Agriculture, Nutrition, and Forestrycenter · 23 members
- Senate Committee on Commerce, Science, and Transportationcenter · 28 members
- Senate Committee on Financecenter · 27 members
Most and least aligned members
Treating Thune's 14 issue scores as a vector, cosine similarity measures whether two voting records point the same way (+100%) or in opposite directions (−100%) — the colleagues whose records align most and least with theirs.
Recent notable votes
Latest news
Senate Republicans rebuke Trump's attempt to undermine GOP leaderPresident Donald Trump's attempt to undermine Senate Majority Leader John Thune (R-SD) by refusing to endorse him for another leadership term backfired.The Hill reported GOP senators publicly united behind Thune, despite Trump's lack of support. Sen. Jerry Mo…
Raw Story · August 11, 2026
Trump's Thune feud backfires as Republicans flock to Senate leader's sidePresident Donald Trump's attempt to undercut the authority of Senate Majority Leader John Thune (R-SD) appears to have had the opposite effect.In a recent interview with Punchbowl News, the president took great pains not to endorse Thune for another term in h…
Raw Story · August 11, 2026
Senate Punts Movement on Clarity Act Until September As Crypto Bill’s Polymarket Odds WaneThe US Senate won’t make any further progress on crypto market-structure legislation until it returns from its recess in mid-September. On Friday, Senate Majority Leader John Thune (R-South Dakota) filed for cloture on the Clarity Act, a procedural step that …
The Daily Hodl · August 11, 2026
Congress Crypto Bill Delay: CLARITY Act Vote Pushed to September as 2026 Passage Hopes FadeThe delay of the Congress crypto bill has set U.S. digital asset regulation in motion for September. Senate Majority Leader John Thune filed cloture on... The post Congress Crypto Bill Delay: CLARITY Act Vote Pushed to September as 2026 Passage Hopes Fade app…
Bitcoinfoundation.org · August 10, 2026
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