U.S. Senate · South Dakota

Sen. John Thune

Republican Serving since Jan. 4, 2005Term ends Jan. 3, 2029
Compare Official website ↗
Votes with own party 98% About as expected Lower than 45 of 53 Senate Republicans Votes with the President 100% About as expected 100% on legislation only Bipartisan bills led 20 More than 17% of Senate members Liberal-to-conservative rank 63rdpercentile in all of Congress · 27th percentile among Republicans

Where they sit

Seated by voting record in the Senate. Percentiles run from 0 (most liberal) to 100 (most conservative).

How this is measured →
Thune
← Most liberalThe aisleMost conservative →
Votes with DemocratsCrosses party linesVotes with Republicans

John Thune's seat is marked. Seats run from most liberal (left) to most conservative (right). Color shows how often each member crosses party lines toward the middle on votes that divide the parties: solid blue or red means almost never, and purple means on at least 1 in 10 of those votes. Gray seats are members too new to score. How this is measured

All of Congress63rdpercentile
More conservative than 62% of all members of Congress.
Most liberalMost conservative
199th most conservative of 531
Republicans in Congress27thpercentile
More liberal than 73% of Republicans in Congress.
Most liberalMost conservative
74th most liberal of 272
The Senate60thpercentile
More conservative than 59% of Senate members.
Most liberalMost conservative
41st most conservative of 100

This score measures who votes with whom. A member who votes no because a bill goes too far, or not far enough, can look more moderate than their views.

With their party and with the President

How this is measured →
Votes with own party
98%
Q1 2025: 99% → Q3 2026: 98%

Lower than 45 of 53 Senate Republicans.

Actual98%
Expected99%
DifferenceAbout the same

Expected is the typical score for senators of the same party whose states voted like this one for president in 2024.

Democrats Republicans 65%100%

Each line is one Senate member, grouped by party. The dot is John Thune. The dark line is what we'd expect given how this state voted for president in 2024.

On 839 votes that split the partiesReal votes only: 100%See the 839 votes
How this is measured
Votes with the President
100%all votes
Q1 2025: 100% → Q3 2026: 100%

Highest of all 53 Senate Republicans.

Actual100%
Expected99%
DifferenceAbout the same

Expected is the typical score for senators of the same party whose states voted like this one for president in 2024.

Democrats Republicans 0%100%

Each line is one Senate member, grouped by party. The dot is John Thune. The dark line is what we'd expect given how this state voted for president in 2024.

Based on 309 votes100% on legislation onlySee the 309 votes
How this is measured

Where they broke ranks

Votes where John Thune went against most of their party or against the President's stated position.

Every vote

Every roll call in the Senate this Congress, with how John Thune voted, how their party voted and the President's position.

DateVoteTheir voteMost of their partyPresident wantedResult
Loading…

A dash means the parties didn't split on that vote, or the President took no public position before it. “Party-line” and “President took a position” list exactly the votes each score counts: the ones cast Yes or No. Missed votes don't count either way and are under “Missed”.

Votes most like

John Thune and Mike Rounds voted the same way on 98% of votes.

South Dakota

South Dakota's delegation →

How South Dakota voted for president in 2024

Harris 34.2%Trump 63.4%

Contact

Phone
202-224-2321
Office
511 Dirksen Senate Office Building Washington DC 20510
Contact form
www.thune.senate.gov

Issue by issue

How often John Thune votes with their party, and with the President, on each kind of issue. Issues are the policy areas Congress assigns to each bill. "With their party" counts only votes where most Democrats and most Republicans voted on opposite sides; "With the President" counts only votes where he took a public position first.

John Thune votes with their party about equally often on every issue.

John ThuneAverage for Senate Republicans
  1. Armed Forces and National Security 90%Average 95% · 10 votes
  2. Government Operations and Politics 92%Average 99% · 13 votes
  3. Congress 92%Average 100% · 13 votes
  4. Economics and Public Finance 92%Average 96% · 184 votes
  5. Finance and Financial Sector 95%Average 97% · 19 votes
  6. Nominations 100%Average 100% · 448 votes
  7. International Affairs 100%Average 97% · 31 votes
  8. Immigration 100%Average 96% · 34 votes
  9. Environmental Protection 100%Average 100% · 18 votes
  10. Public Lands and Natural Resources 100%Average 99% · 15 votes
  11. Energy 100%Average 100% · 13 votes
  12. Transportation and Public Works 100%Average 100% · 12 votes
  13. Foreign Trade and International Finance 100%Average 94% · 6 votes
  14. Taxation 100%Average 99% · 7 votes

Fewer than 5 party-line votes, so not charted: Sports and Recreation (4 votes), Health (4 votes), Emergency Management (2 votes), Science, Technology, Communications (2 votes), Education (2 votes), Crime and Law Enforcement (1 vote), Families (1 vote).

Bipartisan bills led

1 passed their chamber · 1 became law

How this is measured →
How far each bill got:IntroducedPassed one chamberPassed both chambersBecame law

Votes: Voteview (UCLA). Bills: Congress.gov. President's positions: our public list. 2024 results by district: The Downballot. How this is measured · Corrections

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