John Barrasso

Senator · WY · R

Current term Jan 3, 2025 – Jan 3, 2031 · In the Senate since Jun 25, 2007

Official website Contact form Biographical Directory

Portrait: U.S. Government Publishing Office, via unitedstates/images (public domain)

Working relationships

How often this member works with colleagues across party lines, from bill sponsorships and recorded votes in this Congress. Bills are H.R., S., H.J.Res. and S.J.Res.; resolutions, post office namings, and Congressional Gold Medal and commemorative coin bills are left out. Independents are counted with the party they caucus with. These figures describe the public record; they do not measure effectiveness or ideology.

John Barrasso · ChamberLens.org

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John Barrasso

Senator · WY · R

Current term Jan 3, 2025 – Jan 3, 2031 · In the Senate since Jun 25, 2007

Official website Contact form Biographical Directory

Portrait: U.S. Government Publishing Office, via unitedstates/images (public domain)

Working relationships

119th Congress, Senate.

Bills with other-party backing

40%

19 of 48 bills they sponsored had at least one original cosponsor from the other party.

Senate median 41% · Republicans 43%

Cosponsoring the other party's bills

12%

20 of 162 bills they cosponsored were introduced by a Democrat.

Senate median 19% · Republicans 18%

Voting with own party

>99%

On 836 party-line votes, voted with most Republicans 835 times.

Senate median 99% · Republicans >99%

Voting with the other party

On 888 contested votes, voted the same way as most Democrats 48 times.

Senate median 6% · Republicans 6%

Closest collaborators

Counted both ways: bills by the colleague that this member cosponsored, and bills by this member that the colleague cosponsored.

All colleagues

Cynthia M. LummisRWY21 of theirs · 30 of this member's
Steve DainesRMT6 of theirs · 11 of this member's
James E. RischRID6 of theirs · 11 of this member's
Marsha BlackburnRTN4 of theirs · 13 of this member's
Mike LeeRUT9 of theirs · 7 of this member's
James LankfordROK6 of theirs · 7 of this member's
John HoevenRND3 of theirs · 10 of this member's
Ted CruzRTX7 of theirs · 5 of this member's
Mike CrapoRID3 of theirs · 9 of this member's
Shelley Moore CapitoRWV2 of theirs · 10 of this member's

Across the aisle (Democrats)

Amy KlobucharDMN1 of theirs · 5 of this member's
Jacky RosenDNV3 of theirs · 2 of this member's
Margaret Wood HassanDNH1 of theirs · 4 of this member's
Michael F. BennetDCO0 of theirs · 5 of this member's
Brian SchatzDHI2 of theirs · 2 of this member's
John W. HickenlooperDCO

Voting most alike

Contested roll calls (at least 10% of yea and nay votes on the losing side) on which both voted yea or nay, and how often they made the same choice. Colleagues who shared too few of these votes with this member are not ranked.

Most alike

Eric SchmittRMO>99% · 876 of 878
Bernie MorenoROH>99% · 880 of 884
David McCormickRPA>99% · 859 of 863
Bill HagertyRTN>99% · 853 of 857
Mike CrapoRID99% · 873 of 878

Bipartisan bills that advanced

Bills this member sponsored or joined as an original cosponsor, with original backers from both parties, that passed at least one chamber (3). Furthest along first.

Became lawS. 146TAKE IT DOWN Act
Original cosponsor · sponsored by Ted Cruz · original backers: 8 D, 11 R · became law May 19, 2025
Passed the SenateS. 3199988 Lifeline Location Improvement Act of 2026
Sponsor · original backers: 5 D, 7 R · passed the Senate May 11, 2026
Passed the SenateS. 154Colorado River Basin System Conservation Extension Act
Original cosponsor · sponsored by John W. Hickenlooper · original backers: 2 D, 3 R · passed the Senate Jun 18, 2025

Each member's party on each date comes from congress-legislators term records. Party-line votes are roll calls on which most voting Democrats and most voting Republicans took opposite sides; procedural votes are included. The Vice President's tie-breaking votes and impeachment verdicts are not counted, and a bill enacted as part of another bill counts only at the stage it reached on its own. Medians include everyone who served in the chamber this Congress with enough records (5 sponsored bills, 10 cosponsorships, 25 votes). Computed Oct 23, 2026, 11:51 AM ET from Congress.gov and House and Senate roll calls.

119th Congress, Senate.

Bills with other-party backing

40%

19 of 48 bills they sponsored had at least one original cosponsor from the other party.

Senate median 41% · Republicans 43%

Cosponsoring the other party's bills

12%

20 of 162 bills they cosponsored were introduced by a Democrat.

Senate median 19% · Republicans 18%

Voting with own party

>99%

On 836 party-line votes, voted with most Republicans 835 times.

Senate median 99% · Republicans >99%

Voting with the other party

On 888 contested votes, voted the same way as most Democrats 48 times.

Senate median 6% · Republicans 6%

Closest collaborators

Counted both ways: bills by the colleague that this member cosponsored, and bills by this member that the colleague cosponsored.

All colleagues

Cynthia M. LummisRWY21 of theirs · 30 of this member's
Steve DainesRMT6 of theirs · 11 of this member's
James E. RischRID6 of theirs · 11 of this member's
Marsha BlackburnRTN4 of theirs · 13 of this member's
Mike LeeRUT9 of theirs · 7 of this member's
James LankfordROK6 of theirs · 7 of this member's
John HoevenRND3 of theirs · 10 of this member's
Ted CruzRTX7 of theirs · 5 of this member's
Mike CrapoRID3 of theirs · 9 of this member's
Shelley Moore CapitoRWV2 of theirs · 10 of this member's

Across the aisle (Democrats)

Amy KlobucharDMN1 of theirs · 5 of this member's
Jacky RosenDNV3 of theirs · 2 of this member's
Margaret Wood HassanDNH1 of theirs · 4 of this member's
Michael F. BennetDCO0 of theirs · 5 of this member's
Brian SchatzDHI2 of theirs · 2 of this member's
John W. HickenlooperDCO

Voting most alike

Most alike

Eric SchmittRMO>99% · 876 of 878
Bernie MorenoROH>99% · 880 of 884
David McCormickRPA>99% · 859 of 863
Bill HagertyRTN>99% · 853 of 857
Mike CrapoRID99% · 873 of 878

Bipartisan bills that advanced

Bills this member sponsored or joined as an original cosponsor, with original backers from both parties, that passed at least one chamber (3). Furthest along first.

Became lawS. 146TAKE IT DOWN Act
Original cosponsor · sponsored by Ted Cruz · original backers: 8 D, 11 R · became law May 19, 2025
Passed the SenateS. 3199988 Lifeline Location Improvement Act of 2026
Sponsor · original backers: 5 D, 7 R · passed the Senate May 11, 2026
Passed the SenateS. 154Colorado River Basin System Conservation Extension Act
Original cosponsor · sponsored by John W. Hickenlooper · original backers: 2 D, 3 R · passed the Senate Jun 18, 2025

John Barrasso

Working relationships

John Barrasso

Working relationships

Closest collaborators

All colleagues

Across the aisle (Democrats)

Voting most alike

Most alike

Bipartisan bills that advanced

Closest collaborators

All colleagues

Across the aisle (Democrats)

Voting most alike

Most alike

Bipartisan bills that advanced

Most alike among Democrats