Mike Rounds
U.S. Senator from South Dakota since 2015. Re-elected in 2026. Next on the ballot in 2032.
U.S. Senator from South DakotaBorn 1954Real estate agent
- In office
- 11 yrs
- Since 2015
- Bills became law
- 0
- 65 sponsored, 119th Congress
- Votes missed
- 0.9%
- Chamber median 2.1%
- With party
- 99%
- On votes splitting the parties
- Last margin
- +21.0
- Won 2026
- Next election
- 2032
- Nov 2, 2032
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Nov 7, 2026, 3:00 PM ET
Committees
119th Congress.
- Senate Committee on AppropriationsAgriculture, Rural Development, Food and Drug Administration, and Related AgenciesEnergy and Water DevelopmentDepartment of Interior, Environment, and Related AgenciesDepartments of Labor, Health and Human Services, and Education, and Related AgenciesLegislative BranchMilitary Construction, Veterans Affairs, and Related Agencies
- Senate Committee on Armed ServicesCybersecurity · ChairmanEmerging Threats and CapabilitiesStrategic Forces
- Senate Committee on Banking, Housing, and Urban AffairsEconomic PolicyHousing, Transportation, and Community DevelopmentSecurities, Insurance, and Investment · Chairman
- Senate Committee on Indian Affairs
- Senate Select Committee on Intelligence
- Commission on Security and Cooperation in Europe
Source: congress-legislators committeesUpdated Nov 7, 2026, 3:00 PM ET
Legislation
Water Resources Development · In committee Sep 2026
Source: Congress.gov billsUpdated Nov 6, 2026, 3:27 PM ET
Voting record
Where Rounds sits in the U.S. Senate
Rounds is closer to the center than 73% of the chamber's Republicans.
Closest: Roger F. Wicker, John Boozman,
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:06 PM ET
With Rounds’s party
- Votes with the chamber's Republicans99%
- Cosponsorships of the other party's bills32%
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: Rounds’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.
| Date | Bill | Rounds | 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 Rounds 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 | Seat | +/− |
|---|---|---|---|---|---|
| 2026 | U.S. Senate in South Dakota | Won | R+21.0 | R+29.9 | −8.9 |
| 2020 | U.S. Senate, South Dakota | Won | R+31.5 | — | — |
| 2014 | U.S. Senate, South Dakota | Won | R+20.9 | — | — |
| 2006 | Governor of South Dakota | Won | R+26.1 | — | — |
| 2002 | Governor of South Dakota | Won | R+15.0 | — | — |
| 1998 | South Dakota State Senate, District 24 | Won | R+49.9 | — | — |
| 1996 | South Dakota State Senate, District 24 | Won | R+32.0 | — | — |
| 1994 | South Dakota State Senate, District 24 | Won | R+54.7 | — | — |
| 1992 | South Dakota State Senate, District 24 | Won | R+19.9 | — | — |
| 1990 | South Dakota State Senate, District 24 | Won | R+5.1 | — | — |
Source: 99chambers results archive; 2026: South Dakota Secretary of State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Campaign money, 2025–26
- Raised
- $3.8M
- Spent
- $4.4M
- Cash
- $1.3M
Source: FEC filings through Oct 14, 2026Updated Nov 3, 2026, 2:14 AM ET
Campaign committees
Open committees can still raise and spend money.
| ROUNDS FOR SENATE FEC | Active |
Source: FEC filings through Oct 14, 2026Updated Nov 3, 2026, 2:14 AM ET
Seats Rounds has held
- U.S. Senate, South Dakota · 2015–2027
- Governor of South Dakota · 2002–2010
- South Dakota State Senate, District 24 · 1990–2000
Source: 99chambers results archive
Who Rounds has run against
- Brian Bengs (I) · 2026 general, won
- Dan Ahlers (D) · 2020 election, won
- Rick Weiland (D) · 2014 election, won
- Jack Billion (D) · 2006 election, won
- Jim Abbott (D) · 2002 election, won
- Robert Hockett (D) · 1998 election, won
Source: 99chambers results archive; 2026: South Dakota Secretary of State (unofficial)
In the polls
Included in 15 polls; Rounds’s best result was 59% (U.S. Senate in South Dakota).
Rounds’s polls in the database →How we know Rounds
One person, matched across every source we use.
- Bioguide R000605
- FEC S4SD00049
- Wikidata Q722503
- Ballotpedia Mike Rounds
- Vote Smart 7455
- GovTrack 412669
- OpenSecrets N00035187
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Nov 7, 2026, 3:00 PM ET