Markwayne Mullin

Former Senator from Oklahoma, 2023–2026 · Republican

Record from the 119th Congress · From public records: votes from Voteview, bills from congress.gov, money from FEC filings · votes updated Nov 2, 2026 · How we measure

Effectiveness, 119th Congress so far

How it’s measured

0.53· expected 1.22

Below expectations

Would rank 71 of 100 among today’s sitting senators · expected = average of 53 majority-party members

How far Mullin’s own bills got, weighted by substance. The average member scores 1.00.

19 bills and joint resolutions sponsored: 0 significant (got a roll call vote), 18 substantive, 1 commemorative. Compare the Senate

Became law (1)

1 Illinois-specific

S. 550 A bill to provide for the equitable settlement of certain Indian land disputes regarding land in Illinois, and for other purposes.Settles Indian land disputes regarding land in Illinois. AI-readBecame law Sep 25, 2026 · Native AmericansLocal or single-entity · Illinois

Scope tags come from an AI reading of each bill where available, otherwise from its title and policy area. They don’t change the score. How scope is tagged

Became law inside another bill (1)

S.J.Res. 47 A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by the Environmental Protection Agency relating to "California State Motor Vehicle and Engine and Nonroad Engine Pollution Control Standards; The 'Omnibus' Low NOx Regulation; Waiver of Preemption; Notice of Decision".Identical bill became law as H.J.Res. 89 · Jun 12, 2025Via H.J.Res. 89

Mullin’s own bill stalled, but the Congressional Research Service lists an identical bill, or one with similar text, that became law. Shown for context; not counted in the score, which follows the Center for Effective Lawmaking. How this works

How Mullin’s ratings compare with every senator

Ratings, 119th Congress

Scores run 0–100 and always sit next to a median. Each tick is one senator; the ringed marker is Mullin. Medians and ranks are among today’s sitting senators, with Mullin placed among them.

Mullin in plain answers: party votes, bipartisanship, who votes alike

Attendance

How it’s measured

94/ 100

Chamber median 98 · 40 missed of 723

Voted on 683 of 723 roll calls; missed 40. Lower than 85% of senators.

85%100%

Party loyalty

How it’s measured

99/ 100

Senate R median 100 · Rank 39 of 54

Sided with the Republican majority on 634 votes that split the parties. Higher than 52% of senators.

75%100%

Bipartisan

How it’s measured

10/ 100

Chamber median 9 · +1

Average agreement with members of the other party on contested votes. Higher than 71% of senators.

0%30%

Position

How it’s measured

+0.53

Republican middle 80%: 0.38 to 0.78

Left–right position from roll-call similarity (DW-NOMINATE, Voteview), from −1 to +1. Members who vote alike sit near each other.

LiberalConservative

Mullin’s bills that got action in committee or further

All bills

3 bills and joint resolutions sponsored in the 119th Congress, furthest along first. These are the bills counted in Mullin’s effectiveness score.

S. 550 A bill to provide for the equitable settlement of certain Indian land disputes regarding land in Illinois, and for other purposes.Settles Indian land disputes regarding land in Illinois. AI-readNative Americans · Became law Sep 25, 2026Substantive294 words Local or single-entity · Illinois
S. 2257 Legislative Branch Appropriations Act, 2026Congress · Out of committee Jul 10, 2025Substantive6k words Out of committee
S. 630 Quapaw Tribal Settlement Act of 2025Native Americans · In committee Jun 3, 2026Substantive1.2k words In committee

Stage comes from each bill’s latest action on congress.gov; the full history is on each bill page.