Oathstar

U.S. Senator from South Dakota · Class II

Mike Rounds

Republican 2nd term On 2026 ballot
99LoyaltyMed 100
99AttendMed 98
9BipartMed 9
8BreaksMed 2

Position · +0.35

LEFTD · R RANGESRIGHT
In office
Senate 2015–now
11 years in CongressMore senior than 35% of the Senate
Breaks on
Armed Forces and National Security 20% · Economics and Public Finance 3%
Committees
Commission on Security and Cooperation in Europe · Appropriations · Armed Services
Bills on
Armed Forces and National Security · Agriculture and Food · Finance and Financial Sector
Age
71

2026 election

On the November ballot
General election Nov 3, 2026

Facing

See the full race

Bottom line

Where Rounds has influence

Roles

Talks most about

Stories in Rounds’s press releases with their latest stance, last three months. Read by AI.

Where Rounds breaks with Republicans

Method

Share of party-line votes on each issue where Rounds voted against most Republicans. The tick is the median for Senate Republicans.

  1. Armed Forces and National Security 20% · 2 of 10 party 0%
  2. Economics and Public Finance 3% · 6 of 184 party 1%

Notable votes

Full record (Pro)

Where Rounds broke with their party, close outcomes and final passage votes on named bills, newest first.

DateMeasureTitleVote Party split (yea)Result
08/08/26 H.R. 6500 Continuing Appropriations and Extensions Act, 2027On the Motion to Table · This bill provides continuing FY2027 appropriations for federal agencies and extends various expiring programs and authorities.Broke w/ party Nay Passed
61–32
06/04/26 S. 2 Secure America ActOn the Motion · This act provides $70 billion in funding to the Department of Homeland Security (DHS), U.S. Customs and Border Protection (CBP), and U.S.Broke w/ party Yea Failed
15–84
06/02/26 PN8512 On the NominationJeffrey M. Kuhlman, of Kansas, to be United States District Judge for the District of Kansas Not voting Passed
52–46
06/02/26 PN8512 On the Cloture MotionJeffrey M. Kuhlman, of Kansas, to be United States District Judge for the District of Kansas Not voting Passed
52–46
06/02/26 PN8513 On the NominationKathleen S. Lane, of Montana, to be United States District Judge for the District of Montana Not voting Passed
52–46
01/30/26 H.R. 7148 Consolidated Appropriations Act, 2026On the Motion to Table · This bill provides appropriations to several federal departments and agencies for the remainder of FY2026 and provides continuing FY2026…Broke w/ party Yea Passed
58–42
01/30/26 H.R. 7148 Consolidated Appropriations Act, 2026On the Motion to Table · This bill provides appropriations to several federal departments and agencies for the remainder of FY2026 and provides continuing FY2026…Broke w/ party Yea Passed
67–33
01/30/26 H.R. 7148 Consolidated Appropriations Act, 2026On the Amendment · This bill provides appropriations to several federal departments and agencies for the remainder of FY2026 and provides continuing FY2026…Broke w/ party Nay Failed
32–67

Yea ■ filled · Nay □ open · Not voting – dash. Party split bars: Democrats left, Republicans right; dark = yea, light = nay.

What Rounds is saying

All 7 statements and posts

◇ statements (press releases) · ○ posts. When a statement names a bill Rounds voted on, the vote is shown next to it.

Effectiveness, 119th Congress so far

How it’s measured
0.65· expected 1.02

Meets expectations

Rank 58 of 100 in the Senate ┃ expected = average of 32 majority-party members without a committee lead

How far Rounds’s own bills got, weighted by substance. The average member scores 1.00.

  1. Introduced 63
  2. Action in committee 6
  3. Action beyond committee 5
  4. Passed chamber 2
  5. Became law 0

63 bills and joint resolutions sponsored: 0 significant (got a roll call vote), 63 substantive, 0 commemorative. Compare the Senate

How Rounds’s ratings compare with every senator

Ratings, 119th Congress

Scores run 0–100 and always sit next to a median. Each tick is one senator; the ringed marker is Rounds.

99/ 100

Chamber median 98 ┃ 8 missed of 915

Voted on 907 of 915 roll calls; missed 8. Higher than 83% of senators.

85% 100%

Party loyalty

How it’s measured
99/ 100

Senate R median 100 ┃ Rank 41 of 53

Sided with the Republican majority on 832 votes that split the parties. Lower than 51% of senators.

75% 100%
9/ 100

Chamber median 9 ┃ +0

Average agreement with members of the other party on contested votes. Higher than 68% of senators.

0% 30%
+0.35

Republican middle 80%: 0.38 to 0.78

Left–right position from roll-call similarity (DW-NOMINATE, Voteview), from −1 to +1. Members who vote alike sit near each other.

Liberal Conservative

Bills, 119th Congress

All 65 sponsored bills

Sponsored 65 (Senate median 61) · cosponsored 276 (median 307.5), 45 of them as an original cosponsor · most often on Armed Forces and National Security, Agriculture and Food, Finance and Financial Sector.

Votes by issue

How votes are tagged
IssueVotesYea shareWith party
Nominations220 100% Pro
Economics and Public Finance207 36% Pro
Other114 100% Pro
Immigration37 30% Pro
International Affairs36 17% Pro
Defense & national security34 97% Pro
Energy & environment26 100% Pro
Congress19 95% Pro
Environmental Protection19 63% Pro
Finance and Financial Sector19 79% Pro
Armed Forces and National Security18 50% Pro
Public Lands and Natural Resources15 100% Pro
Taxes, finance & economy14 100% Pro
Energy13 100% Pro
Government Operations and Politics13 77% Pro
Sports and Recreation12 67% Pro
Transportation and Public Works12 42% Pro
Foreign affairs & trade10 100% Pro
Health care10 100% Pro
Housing and Community Development9 100% Pro
Transportation & infrastructure8 100% Pro
Taxation7 57% Pro
Budget & appropriations7 100% Pro
Foreign Trade and International Finance6 17% Pro
Crime and Law Enforcement4 100% Pro
Health4 25% Pro
Education & families3 100% Pro
Education2 50% Pro
Emergency Management2 0% Pro
Science, Technology, Communications2 100% Pro
Immigration & border2 100% Pro
Crime & justice2 100% Pro
Families1 0% Pro

Who votes alike

Method

Agreement on contested votes where both cast yea or nay.

Most aligned

  1. RJohn BoozmanAR Senate100%agreement
  2. RAlan ArmstrongOK Senate99%agreement
  3. RPete RickettsNE Senate99%agreement
Full voting networkPro

See all twelve closest allies, the members Rounds most often votes against, and the closest allies in the other party.

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Campaign money

Method

In the 2025–26 cycle Rounds’s campaign raised $3.2M: $1.3M (42%) from individuals and $1.4M (44%) from PACs and other committees. Cash on hand: $2.7M.

Through Jun 30, 2026; filings lag, so recent gifts can take weeks to appear. Money raised also counts loans and transfers, so the shares need not add to 100%. Source: FEC.gov.

Last cycle, party money, self-funding and debts are part of Pro. See Pro

Who funds Rounds

The largest PACs and other committees giving directly to the campaign this cycle, of 346.

  1. Young Victory Committee Party committee
  2. Mortgage Bankers Association Trade association PAC
Amounts, the top 10 and who else they fundPro

See how much each organization gave Rounds this cycle and last, the mix of corporate, labor, trade and other PACs, and who else each one funds.

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Rounds’s own leadership PAC: The Peter Norbeck Leadership PAC. A separate PAC a member sponsors to give to other candidates.

Record over time

Historical recordPro

Compare Rounds’s measures across every Congress on file.

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Résumé and contact