U.S. Senate · South Dakota

Sen. Mike Rounds

Republican Serving since Jan. 6, 2015Term ends Jan. 3, 2027
Compare Official website ↗
Votes with own party 99% About as expected Lower than 40 of 53 Senate Republicans Votes with the President 100% About as expected 100% on legislation only Bipartisan bills led 73 More than 81% of Senate members Liberal-to-conservative rank 56thpercentile in all of Congress · 14th 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 →
Rounds
← Most liberalThe aisleMost conservative →
Votes with DemocratsCrosses party linesVotes with Republicans

Mike Rounds'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 Congress56thpercentile
More conservative than 56% of all members of Congress.
Most liberalMost conservative
233rd most conservative of 531
Republicans in Congress14thpercentile
More liberal than 85% of Republicans in Congress.
Most liberalMost conservative
40th most liberal of 272
The Senate51stpercentile
More conservative than 50% of Senate members.
Most liberalMost conservative
50th 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
99%
Q1 2025: 99% → Q3 2026: 100%

Lower than 40 of 53 Senate Republicans.

Actual99%
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 Mike Rounds. The dark line is what we'd expect given how this state voted for president in 2024.

On 832 votes that split the partiesReal votes only: 99%See the 832 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 Mike Rounds. The dark line is what we'd expect given how this state voted for president in 2024.

Based on 305 votes100% on legislation onlySee the 305 votes
How this is measured

Where they broke ranks

Votes where Mike Rounds 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 Mike Rounds 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

Mike Rounds and John Thune 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
202-224-5842
Office
716 Hart Senate Office Building Washington DC 20510
Contact form
www.rounds.senate.gov

Issue by issue

How often Mike Rounds 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.

Mike Rounds sides with their party least often on Armed Forces and National Security (80%).

Mike RoundsAverage for Senate Republicans
  1. Armed Forces and National Security 80%Average 95% · 10 votes
  2. Economics and Public Finance 97%Average 96% · 184 votes
  3. Nominations 100%Average 100% · 441 votes
  4. International Affairs 100%Average 97% · 31 votes
  5. Immigration 100%Average 96% · 34 votes
  6. Environmental Protection 100%Average 100% · 18 votes
  7. Finance and Financial Sector 100%Average 97% · 19 votes
  8. Public Lands and Natural Resources 100%Average 99% · 15 votes
  9. Energy 100%Average 100% · 13 votes
  10. Government Operations and Politics 100%Average 99% · 13 votes
  11. Congress 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

4 passed their chamber · 0 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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