All members

Former member of Congress

Markwayne Mullin

Republican · Former U.S. Senator for Oklahoma

Official biography (Biographical Directory of the U.S. Congress)

Compare with another member

119th Congress, Senate

Party unity how it’s measured

99.2%

Voted with their party on 629 of 634 party-unity votes

Missed votes how it’s measured

5.5%

Missed 40 of 723 votes they were eligible for

Cross-party cosponsoring how it’s measured

19.5%

23 of the 118 bills they cosponsored were introduced by another party

Cross-party support how it’s measured

57.9%

11 of the 19 bills they introduced have a cosponsor from another party

How they voted by issue area

Each vote counts in every issue area its bill has. A Yea on a procedural vote or motion doesn’t mean support for the bill. How we count these

Issue areaYeaNayPresent or not votingVotes
Agriculture and food512
Civil rights400
Crime and justice1012
Defense and veterans912
Economy and finance1412
Education912
Energy1734
Environment2113
Foreign affairs and trade862
Government and elections922
Healthcare1012
Housing501
Immigration1012
Labor and jobs812
Social safety net912
Taxes400
Technology1212
Transportation912

Party unity over time

By month, across every Congress we cover in the Senate. Months with few party-unity votes can swing widely.

Show as a table
MonthParty unityWith party
Jan 2023100%1 of 1
Feb 2023100%27 of 27
Mar 202397.8%44 of 45
Apr 2023100%16 of 16
May 202396.6%28 of 29
Jun 202397.1%33 of 34
Jul 202395.2%20 of 21
Sep 2023100%21 of 21
Oct 202396.4%27 of 28
Nov 202394.1%32 of 34
Dec 202393.3%14 of 15
Jan 202478.6%11 of 14
Feb 202492.6%25 of 27
Mar 202493.5%29 of 31
Apr 2024100%22 of 22
May 202480%12 of 15
Jun 2024100%13 of 13
Jul 2024100%16 of 16
Aug 202450%1 of 2
Sep 202490.9%20 of 22
Nov 2024100%43 of 43
Dec 202482.1%23 of 28
Jan 2025100%20 of 20
Feb 2025100%68 of 68
Mar 202598.1%52 of 53
Apr 2025100%52 of 52
May 2025100%54 of 54
Jun 2025100%72 of 72
Jul 2025100%95 of 95
Aug 2025100%23 of 23
Sep 202593.1%27 of 29
Oct 2025100%61 of 61
Nov 2025100%20 of 20
Dec 2025100%33 of 33
Jan 202688.2%15 of 17
Feb 2026100%23 of 23
Mar 2026100%14 of 14

Votes

Every vote that counts in our statistics that they were eligible for, newest first.

Showing 1–50 of 723 votes

  • Mar 23, 2026Roll call 64

    On the Cloture Motion

    Motion to Invoke Cloture: Colin McDonald to be an Assistant Attorney General

    Cloture · Cloture Motion Agreed to

    Not voting
  • Mar 23, 2026Roll call 63

    On the Nomination

    Confirmation: Markwayne Mullin, of Oklahoma, to be Secretary of Homeland Security

    Final passage · Nomination Confirmed

    YeaWith their party
  • Mar 22, 2026Roll call 62

    On the Cloture Motion

    Motion to Invoke Cloture: Markwayne Mullin to be Secretary of Homeland Security

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Mar 21, 2026Roll call 61

    S. 1383: On the Cloture Motion

    Veterans Accessibility Advisory Committee Act of 2025

    Cloture · Cloture Motion Rejected · Civil rights, Government and elections, Healthcare

    NayWith their party
  • Mar 21, 2026Roll call 60

    S. 1383: On the Cloture Motion

    Veterans Accessibility Advisory Committee Act of 2025

    Cloture · Cloture Motion Rejected · Civil rights, Government and elections, Healthcare

    YeaWith their party
  • Mar 20, 2026Roll call 59

    H.R. 7147: On Cloture on the Motion to Proceed

    Homeland Security and Further Additional Continuing Appropriations Act, 2026.

    Cloture · Cloture on the Motion to Proceed Rejected · Economy and finance, Immigration, Labor and jobs, Technology, Transportation

    YeaWith their party
  • Mar 18, 2026Roll call 58

    S.J.Res. 118: On the Motion to Discharge

    A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress.

    Procedural · Motion to Discharge Rejected · Foreign affairs and trade

    NayWith their party
  • Mar 17, 2026Roll call 57

    S. 1383: On the Motion to Proceed

    Veterans Accessibility Advisory Committee Act of 2025

    Procedural · Motion to Proceed Agreed to · Civil rights, Government and elections, Healthcare

    YeaWith their party
  • Mar 17, 2026Roll call 56

    On the Nomination

    Confirmation: Anna St. John, of Louisiana, to be U.S. District Judge for the Eastern District of Louisiana

    Final passage · Nomination Confirmed

    YeaWith their party
  • Mar 17, 2026Roll call 55

    On the Cloture Motion

    Motion to Invoke Cloture: Anna St. John to be U.S. District Judge for the Eastern District of Louisiana

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Mar 12, 2026Roll call 54

    H.R. 7147: On Cloture on the Motion to Proceed

    Homeland Security and Further Additional Continuing Appropriations Act, 2026.

    Cloture · Cloture on the Motion to Proceed Rejected · Economy and finance, Immigration, Labor and jobs, Technology, Transportation

    YeaWith their party
  • Mar 12, 2026Roll call 53

    H.R. 6644: On Passage of the Bill

    21st Century ROAD to Housing Act

    Final passage · Bill Passed · Housing, Technology

    Yea
  • Mar 11, 2026Roll call 52

    H.R. 6644: On the Cloture Motion

    21st Century ROAD to Housing Act

    Cloture · Cloture Motion Agreed to · Housing, Technology

    Yea
  • Mar 11, 2026Roll call 51

    H.R. 6644: On the Amendment

    21st Century ROAD to Housing Act

    Amendment · Amendment Agreed to · Housing, Technology

    Yea
  • Mar 10, 2026Roll call 50

    H.R. 6644: On the Cloture Motion

    21st Century ROAD to Housing Act

    Cloture · Cloture Motion Agreed to · Housing, Technology

    Yea
  • Mar 10, 2026Roll call 49

    On the Nomination

    Confirmation: Lt. Gen. Joshua M. Rudd to be General in the United States Army

    Final passage · Nomination Confirmed

    YeaWith their party
  • Mar 9, 2026Roll call 48

    On the Cloture Motion

    Motion to Invoke Cloture: Lt. Gen. Joshua M. Rudd to be General in the United States Army

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Mar 5, 2026Roll call 47

    H.R. 7147: On Cloture on the Motion to Proceed

    Homeland Security and Further Additional Continuing Appropriations Act, 2026.

    Cloture · Cloture on the Motion to Proceed Rejected · Economy and finance, Immigration, Labor and jobs, Technology, Transportation

    YeaWith their party
  • Mar 4, 2026Roll call 46

    S.J.Res. 104: On the Motion to Discharge

    A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress.

    Procedural · Motion to Discharge Rejected · Foreign affairs and trade

    NayWith their party
  • Mar 4, 2026Roll call 45

    H.R. 6644: On the Motion to Proceed

    21st Century ROAD to Housing Act

    Procedural · Motion to Proceed Agreed to · Housing, Technology

    Yea
  • Mar 2, 2026Roll call 44

    H.R. 6644: On Cloture on the Motion to Proceed

    21st Century ROAD to Housing Act

    Cloture · Cloture on the Motion to Proceed Agreed to · Housing, Technology

    Yea
  • Feb 26, 2026Roll call 43

    On the Nomination

    Confirmation: Ryan McCormack, of Virginia, to be Under Secretary of Transportation for Policy

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 26, 2026Roll call 42

    On the Cloture Motion

    Motion to Invoke Cloture: Ryan McCormack to be Under Secretary of Transportation for Policy

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Feb 25, 2026Roll call 41

    On the Nomination

    Confirmation: John DeLeeuw, of Texas, to be a Member of the National Transportation Safety Board

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 25, 2026Roll call 40

    On the Cloture Motion

    Motion to Invoke Cloture: John DeLeeuw to be a Member of the National Transportation Safety Board

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Feb 24, 2026Roll call 39

    H.R. 7147: On Cloture on the Motion to Proceed

    Homeland Security and Further Additional Continuing Appropriations Act, 2026.

    Cloture · Cloture on the Motion to Proceed Rejected · Economy and finance, Immigration, Labor and jobs, Technology, Transportation

    YeaWith their party
  • Feb 12, 2026Roll call 38

    H.R. 7147: On Cloture on the Motion to Proceed

    Homeland Security and Further Additional Continuing Appropriations Act, 2026.

    Cloture · Cloture on the Motion to Proceed Rejected · Economy and finance, Immigration, Labor and jobs, Technology, Transportation

    YeaWith their party
  • Feb 12, 2026Roll call 37

    H.J.Res. 142: On the Joint Resolution

    Disapproving the action of the District of Columbia Council in approving the D.C. Income and Franchise Tax Conformity and Revision Temporary Amendment Act of 2025.

    Final passage · Joint Resolution Passed · Government and elections, Taxes

    YeaWith their party
  • Feb 11, 2026Roll call 36

    H.J.Res. 142: On the Motion to Proceed

    Disapproving the action of the District of Columbia Council in approving the D.C. Income and Franchise Tax Conformity and Revision Temporary Amendment Act of 2025.

    Procedural · Motion to Proceed Agreed to · Government and elections, Taxes

    YeaWith their party
  • Feb 10, 2026Roll call 35

    S.J.Res. 95: On the Motion to Proceed

    A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Internal Revenue Service relating to "Interim Guidance Simplifying Application of the Corporate Alternative Minimum Tax to Partnerships".

    Procedural · Motion to Proceed Rejected · Taxes

    NayWith their party
  • Feb 10, 2026Roll call 34

    On the Nomination

    Confirmation: Daniel E. Burrows, of Colorado, to be an Assistant Attorney General

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 9, 2026Roll call 33

    On the Cloture Motion

    Motion to Invoke Cloture: Daniel E. Burrows to be an Assistant Attorney General

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Feb 5, 2026Roll call 32

    On the Nomination

    Confirmation: Justin R. Olson, of Indiana, to be U.S. District Judge for the Southern District of Indiana

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 5, 2026Roll call 31

    On the Cloture Motion

    Motion to Invoke Cloture: Justin R. Olson to be U.S. District Judge for the Southern District of Indiana

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Feb 5, 2026Roll call 30

    On the Nomination

    Confirmation: Brian Charles Lea, of Tennessee, to be U.S. District Judge for the Western District of Tennessee

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 4, 2026Roll call 29

    On the Cloture Motion

    Motion to Invoke Cloture: Brian Charles Lea to be U.S. District Judge for the Western District of Tennessee

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Feb 4, 2026Roll call 28

    On the Nomination

    Confirmation: Megan Blair Benton, of Missouri, to be U.S. District Judge for the Western District of Missouri

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 4, 2026Roll call 27

    On the Cloture Motion

    Motion to Invoke Cloture: Megan Blair Benton to be U.S. District Judge for the Western District of Missouri

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Feb 4, 2026Roll call 26

    On the Nomination

    Confirmation: Aaron Christian Peterson, of Alaska, to be United States District Judge for the District of Alaska

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 3, 2026Roll call 25

    On the Cloture Motion

    Motion to Invoke Cloture: Aaron Christian Peterson to be U.S. District Judge for the District of Alaska

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Feb 3, 2026Roll call 24

    On the Nomination

    Confirmation: Nicholas Jon Ganjei, of Texas, to be U.S. District Judge for the Southern District of Texas

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 3, 2026Roll call 23

    On the Cloture Motion

    Motion to Invoke Cloture: Nicholas Jon Ganjei to be U.S. District Judge for the Southern District of Texas

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Feb 3, 2026Roll call 22

    On the Nomination

    Confirmation: David Clay Fowlkes, of Arkansas, to be U.S. District Judge for the Western District of Arkansas

    Final passage · Nomination Confirmed

    YeaWith their party
  • Feb 2, 2026Roll call 21

    On the Cloture Motion

    Motion to Invoke Cloture: David Clay Fowlkes to be United States District Judge for the Western District of Arkansas

    Cloture · Cloture Motion Agreed to

    YeaWith their party
  • Jan 30, 2026Roll call 20

    H.R. 7148: On Passage of the Bill

    Consolidated Appropriations Act, 2026

    Final passage · Bill Passed · Agriculture and food, Crime and justice, Defense and veterans, Economy and finance, Education, Energy, Environment, Foreign affairs and trade, Government and elections, Healthcare, Housing, Immigration, Labor and jobs, Social safety net, Technology, Transportation

    YeaWith their party
  • Jan 30, 2026Roll call 19

    H.R. 7148: On the Motion (Motion to Waive All Applicable Budgetary Discipline Re: Merkley Amdt. No. 4287)

    Consolidated Appropriations Act, 2026

    Procedural · Motion Rejected · Agriculture and food, Crime and justice, Defense and veterans, Economy and finance, Education, Energy, Environment, Foreign affairs and trade, Government and elections, Healthcare, Housing, Immigration, Labor and jobs, Social safety net, Technology, Transportation

    NayWith their party
  • Jan 30, 2026Roll call 18

    H.R. 7148: On the Amendment

    Consolidated Appropriations Act, 2026

    Amendment · Amendment Rejected · Agriculture and food, Crime and justice, Defense and veterans, Economy and finance, Education, Energy, Environment, Foreign affairs and trade, Government and elections, Healthcare, Housing, Immigration, Labor and jobs, Social safety net, Technology, Transportation

    NayWith their party
  • Jan 30, 2026Roll call 17

    H.R. 7148: On the Motion to Table

    Consolidated Appropriations Act, 2026

    Procedural · Motion to Table Agreed to · Agriculture and food, Crime and justice, Defense and veterans, Economy and finance, Education, Energy, Environment, Foreign affairs and trade, Government and elections, Healthcare, Housing, Immigration, Labor and jobs, Social safety net, Technology, Transportation

    NayWith their party
  • Jan 30, 2026Roll call 16

    H.R. 7148: On the Motion to Table

    Consolidated Appropriations Act, 2026

    Procedural · Motion to Table Agreed to · Agriculture and food, Crime and justice, Defense and veterans, Economy and finance, Education, Energy, Environment, Foreign affairs and trade, Government and elections, Healthcare, Housing, Immigration, Labor and jobs, Social safety net, Technology, Transportation

    NayWith their party
  • Jan 30, 2026Roll call 15

    H.R. 7148: On the Motion to Table

    Consolidated Appropriations Act, 2026

    Procedural · Motion to Table Agreed to · Agriculture and food, Crime and justice, Defense and veterans, Economy and finance, Education, Energy, Environment, Foreign affairs and trade, Government and elections, Healthcare, Housing, Immigration, Labor and jobs, Social safety net, Technology, Transportation

    YeaAgainst their party

Bills

The bills and joint resolutions behind the bipartisanship numbers, newest first. How we count these

Introduced (19)

  • S. 3994: PRIME Meat Processing in Indian Country ActCosponsor from another party
  • S. 3946: Tribal Firearm Access Act
  • S. 3945: Tribal Police Department Parity Act
  • S. 3302: Mikaela Naylon Give Kids a Chance Act of 2025Cosponsor from another party
  • S. 3111: Small Businesses before Bureaucrats Act
  • S. 2898: Dennis John Benigno Traumatic Brain Injury Program Reauthorization Act of 2025Cosponsor from another party
  • S.J.Res. 79: A joint resolution honoring the sacrifice of Marine Corps Lance Corporal David L. Espinoza, Marine Corps Sergeant Nicole L. Gee, Marine Corps Staff Sergeant Darin Taylor Hoover, Army Staff Sergeant Ryan Christian Knauss, Marine Corps Corporal Hunter Lopez, Marine Corps Lance Corporal Rylee J. McCollum, Marine Corps Lance Corporal Dylan R. Merola, Marine Corps Lance Corporal Kareem M. Nikoui, Marine Corps Corporal Daegan W. Page, Marine Corps Sergeant Johanny Rosario, Marine Corps Corporal Humberto A. Sanchez, Marine Corps Lance Corporal Jared M. Schmitz, and Navy Petty Officer Third Class Maxton W. Soviak.Cosponsor from another party
  • S. 2257: Legislative Branch Appropriations Act, 2026
  • S. 2027: Prescription Information Modernization Act of 2025Cosponsor from another party
  • S. 1823: Black Vulture Relief Act of 2025

See all 19

Cosponsored (118)

  • S. 3909: Stop Illegal Alien Cops Act
  • S. 3752: SAVE America Act
  • S.J.Res. 102: A joint resolution disapproving the action of the District of Columbia Council in approving the D.C. Income and Franchise Tax Conformity and Revision Temporary Amendment Act of 2025.
  • S. 3675: ICE Protection Act of 2026
  • S. 3627: Pregnant Students’ Rights Act
  • S. 3606: Fraud Accountability Act
  • S. 3584: Stop Illegal Aliens Drunk Driving
  • S. 3478: Indian Buffalo Management ActIntroduced by another party
  • S. 3366: Back the Blue Act of 2025
  • S. 3358: Native American Seeds Act of 2025Introduced by another party

See all 118

Service

Seats held in the Congresses we cover, from the 117th (2021) on.

  • Senator for Oklahoma

    January 3, 2023 – March 23, 2026 · Republican

  • Representative for Oklahoma's 2nd district

    January 3, 2021 – January 3, 2023 · Republican