Christopher A. Coons

Senator · DE · D

Current term Jan 3, 2021 – Jan 3, 2027 · In the Senate since Nov 15, 2010

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.

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Christopher A. Coons

Senator · DE · D

Current term Jan 3, 2021 – Jan 3, 2027 · In the Senate since Nov 15, 2010

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

82%

45 of 55 bills they sponsored had at least one original cosponsor from the other party.

Senate median 41% · Democrats 35%

Cosponsoring the other party's bills

41%

183 of 442 bills they cosponsored were introduced by a Republican.

Senate median 19% · Democrats 22%

Voting with own party

94%

On 793 party-line votes, voted with most Democrats 746 times.

Senate median 99% · Democrats 96%

Voting with the other party

11%

On 842 contested votes, voted the same way as most Republicans 91 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

Tim KaineDVA15 of theirs · 10 of this member's
Thom TillisRNC12 of theirs · 11 of this member's
Jeanne ShaheenDNH17 of theirs · 6 of this member's
Richard J. DurbinDIL14 of theirs · 6 of this member's
John CornynRTX15 of theirs · 5 of this member's
Richard BlumenthalDCT16 of theirs · 4 of this member's
Bill CassidyRLA8 of theirs · 9 of this member's
Chris Van HollenDMD9 of theirs · 6 of this member's
Cory A. BookerDNJ9 of theirs · 5 of this member's
Alex PadillaDCA10 of theirs · 4 of this member's

Across the aisle (Republicans)

Thom TillisRNC12 of theirs · 11 of this member's
John CornynRTX15 of theirs · 5 of this member's
Bill CassidyRLA8 of theirs · 9 of this member's
Lisa MurkowskiRAK8 of theirs · 5 of this member's
Marsha BlackburnRTN7 of theirs · 5 of this member's
Katie Boyd BrittRAL

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

Amy KlobucharDMN95% · 788 of 830
Tammy BaldwinDWI94% · 793 of 840
Maria CantwellDWA94% · 793 of 840
Jack ReedDRI94% · 785 of 835
Tammy DuckworthDIL94% · 736 of 784

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 (11). Furthest along first.

Became lawS. 3424Bankruptcy Administration Improvement Act of 2025
Sponsor · original backers: 2 D, 2 R · became law Feb 6, 2026
Passed the SenateS. 4668Protect College Sports Act of 2026
Original cosponsor · sponsored by Ted Cruz · original backers: 2 D, 2 R · passed the Senate Sep 28, 2026
Passed the SenateS. 4850Diversity Jurisdiction Inflation Adjustment Act
Original cosponsor · sponsored by John Kennedy · original backers: 2 D, 2 R · passed the Senate Aug 7, 2026
Passed the SenateS. 4472Accelerating Access to Critical Therapies for ALS Reauthorization Act of 2026
Original cosponsor · sponsored by Lisa Murkowski · original backers: 1 D, 1 R · passed the Senate Aug 4, 2026
Passed the SenateS. 3977Bankruptcy Threshold Adjustment Act of 2026
Original cosponsor · sponsored by Chuck Grassley · original backers: 3 D, 3 R · passed the Senate Aug 3, 2026

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, 6:07 PM ET from Congress.gov and House and Senate roll calls.

119th Congress, Senate.

Bills with other-party backing

82%

45 of 55 bills they sponsored had at least one original cosponsor from the other party.

Senate median 41% · Democrats 35%

Cosponsoring the other party's bills

41%

183 of 442 bills they cosponsored were introduced by a Republican.

Senate median 19% · Democrats 22%

Voting with own party

94%

On 793 party-line votes, voted with most Democrats 746 times.

Senate median 99% · Democrats 96%

Voting with the other party

11%

On 842 contested votes, voted the same way as most Republicans 91 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

Tim KaineDVA15 of theirs · 10 of this member's
Thom TillisRNC12 of theirs · 11 of this member's
Jeanne ShaheenDNH17 of theirs · 6 of this member's
Richard J. DurbinDIL14 of theirs · 6 of this member's
John CornynRTX15 of theirs · 5 of this member's
Richard BlumenthalDCT16 of theirs · 4 of this member's
Bill CassidyRLA8 of theirs · 9 of this member's
Chris Van HollenDMD9 of theirs · 6 of this member's
Cory A. BookerDNJ9 of theirs · 5 of this member's
Alex PadillaDCA10 of theirs · 4 of this member's

Across the aisle (Republicans)

Thom TillisRNC12 of theirs · 11 of this member's
John CornynRTX15 of theirs · 5 of this member's
Bill CassidyRLA8 of theirs · 9 of this member's
Lisa MurkowskiRAK8 of theirs · 5 of this member's
Marsha BlackburnRTN7 of theirs · 5 of this member's
Katie Boyd BrittRAL

Voting most alike

Most alike

Amy KlobucharDMN95% · 788 of 830
Tammy BaldwinDWI94% · 793 of 840
Maria CantwellDWA94% · 793 of 840
Jack ReedDRI94% · 785 of 835
Tammy DuckworthDIL94% · 736 of 784

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 (11). Furthest along first.

Became lawS. 3424Bankruptcy Administration Improvement Act of 2025
Sponsor · original backers: 2 D, 2 R · became law Feb 6, 2026
Passed the SenateS. 4668Protect College Sports Act of 2026
Original cosponsor · sponsored by Ted Cruz · original backers: 2 D, 2 R · passed the Senate Sep 28, 2026
Passed the SenateS. 4850Diversity Jurisdiction Inflation Adjustment Act
Original cosponsor · sponsored by John Kennedy · original backers: 2 D, 2 R · passed the Senate Aug 7, 2026
Passed the SenateS. 4472Accelerating Access to Critical Therapies for ALS Reauthorization Act of 2026
Original cosponsor · sponsored by Lisa Murkowski · original backers: 1 D, 1 R · passed the Senate Aug 4, 2026
Passed the SenateS. 3977Bankruptcy Threshold Adjustment Act of 2026
Original cosponsor · sponsored by Chuck Grassley · original backers: 3 D, 3 R · passed the Senate Aug 3, 2026

Christopher A. Coons

Working relationships

Christopher A. Coons

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