Michael F. Bennet

Senator · CO · D

Current term Jan 3, 2023 – Jan 3, 2029 · In the Senate since Jan 22, 2009

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.

Michael F. Bennet · ChamberLens.org

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Michael F. Bennet

Senator · CO · D

Current term Jan 3, 2023 – Jan 3, 2029 · In the Senate since Jan 22, 2009

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

36%

26 of 72 bills they sponsored had at least one original cosponsor from the other party.

Senate median 41% · Democrats 35%

Cosponsoring the other party's bills

36%

102 of 287 bills they cosponsored were introduced by a Republican.

Senate median 19% · Democrats 22%

Voting with own party

97%

On 764 party-line votes, voted with most Democrats 742 times.

Senate median 99% · Democrats 96%

Voting with the other party

On 815 contested votes, voted the same way as most Republicans 66 times.

Senate median 6% · Democrats 8%

Closest collaborators

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

All colleagues

John W. HickenlooperDCO5 of theirs · 24 of this member's
Ron WydenDOR9 of theirs · 7 of this member's
Catherine Cortez MastoDNV11 of theirs · 5 of this member's
Ben Ray LujánDNM8 of theirs · 7 of this member's
Jeff MerkleyDOR9 of theirs · 6 of this member's
Martin HeinrichDNM7 of theirs · 6 of this member's
Richard BlumenthalDCT9 of theirs · 4 of this member's
Christopher A. CoonsDDE6 of theirs · 5 of this member's
Tim KaineDVA6 of theirs · 4 of this member's
Chris Van HollenDMD6 of theirs · 4 of this member's

Across the aisle (Republicans)

Mike CrapoRID9 of theirs · 1 of this member's
Pete RickettsRNE5 of theirs · 2 of this member's
Roger MarshallRKS7 of theirs · 0 of this member's
Bill CassidyRLA3 of theirs · 3 of this member's
Thom TillisRNC3 of theirs · 3 of this member's
Susan M. CollinsRME

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

John W. HickenlooperDCO97% · 783 of 805
Maria CantwellDWA96% · 778 of 813
Tina SmithDMN95% · 739 of 776
Patty MurrayDWA95% · 732 of 769
Tammy BaldwinDWI95% · 773 of 813

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 (4). Furthest along first.

Became lawS. 356Secure Rural Schools Reauthorization Act of 2025
Original cosponsor · sponsored by Mike Crapo · original backers: 10 D, 11 R · became law Dec 18, 2025
Passed the SenateS. 4460Rural Community Hospital Demonstration Program Reauthorization
Original cosponsor · sponsored by Chuck Grassley · original backers: 8 D, 8 R · passed the Senate May 20, 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
Passed the SenateS. 1467Homebuyers Privacy Protection Act
Original cosponsor · sponsored by Jack Reed · original backers: 24 D, 12 R · passed the Senate Jun 12, 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

36%

26 of 72 bills they sponsored had at least one original cosponsor from the other party.

Senate median 41% · Democrats 35%

Cosponsoring the other party's bills

36%

102 of 287 bills they cosponsored were introduced by a Republican.

Senate median 19% · Democrats 22%

Voting with own party

97%

On 764 party-line votes, voted with most Democrats 742 times.

Senate median 99% · Democrats 96%

Voting with the other party

On 815 contested votes, voted the same way as most Republicans 66 times.

Senate median 6% · Democrats 8%

Closest collaborators

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

All colleagues

John W. HickenlooperDCO5 of theirs · 24 of this member's
Ron WydenDOR9 of theirs · 7 of this member's
Catherine Cortez MastoDNV11 of theirs · 5 of this member's
Ben Ray LujánDNM8 of theirs · 7 of this member's
Jeff MerkleyDOR9 of theirs · 6 of this member's
Martin HeinrichDNM7 of theirs · 6 of this member's
Richard BlumenthalDCT9 of theirs · 4 of this member's
Christopher A. CoonsDDE6 of theirs · 5 of this member's
Tim KaineDVA6 of theirs · 4 of this member's
Chris Van HollenDMD6 of theirs · 4 of this member's

Across the aisle (Republicans)

Mike CrapoRID9 of theirs · 1 of this member's
Pete RickettsRNE5 of theirs · 2 of this member's
Roger MarshallRKS7 of theirs · 0 of this member's
Bill CassidyRLA3 of theirs · 3 of this member's
Thom TillisRNC3 of theirs · 3 of this member's
Susan M. CollinsRME

Voting most alike

Most alike

John W. HickenlooperDCO97% · 783 of 805
Maria CantwellDWA96% · 778 of 813
Tina SmithDMN95% · 739 of 776
Patty MurrayDWA95% · 732 of 769
Tammy BaldwinDWI95% · 773 of 813

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 (4). Furthest along first.

Became lawS. 356Secure Rural Schools Reauthorization Act of 2025
Original cosponsor · sponsored by Mike Crapo · original backers: 10 D, 11 R · became law Dec 18, 2025
Passed the SenateS. 4460Rural Community Hospital Demonstration Program Reauthorization
Original cosponsor · sponsored by Chuck Grassley · original backers: 8 D, 8 R · passed the Senate May 20, 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
Passed the SenateS. 1467Homebuyers Privacy Protection Act
Original cosponsor · sponsored by Jack Reed · original backers: 24 D, 12 R · passed the Senate Jun 12, 2025

Michael F. Bennet

Working relationships

Michael F. Bennet

Working relationships

Closest collaborators

All colleagues

Across the aisle (Republicans)

Voting most alike

Most alike

Bipartisan bills that advanced

Closest collaborators

All colleagues

Across the aisle (Republicans)

Voting most alike

Most alike

Bipartisan bills that advanced

Most alike among Republicans