Congress is out of session until Monday, November 9 for the midterm campaign. No new roll-call votes until then; the last were the House on Sep 16 and the Senate on Sep 30.

People / Mike Rounds / Questions

Questions about Mike Rounds

U.S. Senator from South Dakota · Republican · from roll-call votes in the 119th Congress

How often does Mike Rounds vote with his party?

Mike Rounds voted with Republicans on 99% of party-line votes in the 119th Congress (Senate median 99%), as of Nov 1, 2026.

Party-line votes
Party-line votes cast832
With Republicans824 (99%)
Against Republicans8
Senate median99%
Senate Republicans, median100%

Source: Voteview roll calls (UCLA) · How we measure · Who breaks with party most · Updated Nov 1, 2026

How bipartisan is Mike Rounds?

Mike Rounds voted the same way as Democrats on 9% of shared contested votes in the 119th Congress (Senate median 9%), 32nd most of 99 Senate members, as of Nov 1, 2026.

Bipartisanship
Contested votes cast885
Same vote as Democrats9%
Senate median9%
Rank in the chamber32nd of 99

Source: Voteview roll calls (UCLA) · How we measure · Updated Nov 1, 2026

Which members vote most like Mike Rounds?

John Boozman voted the same way as Mike Rounds most often: 100% of 871 shared contested votes in the 119th Congress (median for two Senate members of the same party 96%), as of Nov 1, 2026.

Median for two Senate members of the same party: 96%; of different parties: 8%.

Members who vote most alike
MemberSame voteShared votes
RJohn Boozman100%871
RAlan Armstrong99%177
RPete Ricketts99%877
RShelley Moore Capito99%868
RDeb Fischer99%876
DJohn Fetterman Closest of the Democrats26%830

Source: Voteview roll calls (UCLA) · How we measure · Updated Nov 1, 2026

How much of Mike Rounds’s PAC money came from PACs whose organizations lobbied on bills he voted on?

Of the 274 PACs that gave to Mike Rounds in 2025–26 and have a lobbying organization behind them, 113 belong to organizations that lobbied on bills that came to a vote with him in the chamber or that he cosponsored or sponsored (41%; Senate median 41%); together they gave $579K of the $1.8M in PAC money he received (33%; Senate median 29%), as of Nov 1, 2026.

Largest PACs this cycle: Young Victory Committee, Mortgage Bankers Association, Aflac. What each gave is part of Pro.

PACs whose organizations lobbied
PACs that gave in 2025–26353
With a lobbying organization behind them274
Of those, their organizations lobbied on these bills113 (41%)
Senate median41%
Their gifts, together$579K of $1.8M

Source: FEC PAC gifts · Senate LDA lobbying filings · Bill by bill on the profile · How we measure · Updated Nov 1, 2026

Who is running against Mike Rounds in 2026?

Ballot not yet checked. Oathstar lists 1 other nominee for the U.S. Senate in South Dakota from published primary results; the ballot has not been checked against an official list yet.

On the ballot for the U.S. Senate in South Dakota
CandidatePartyRaised
Mike RoundsRepublican Republican, incumbent$5.1M
Brian BengsIndependent Independent$1.9M

Source: The full race