Jon Tester

Former Senator from Montana, 2007–2025 · Democrat

Record from the 118th Congress · From public records: votes from Voteview, bills from congress.gov, money from FEC filings · votes updated Nov 10, 2026 · How we measure

Effectiveness, 118th Congress

How it’s measured

2.66· expected 1.14

Above expectations

Rank 3 of 102 who served in the Senate that Congress · expected = average of 53 majority-party members

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

62 bills and joint resolutions sponsored: 2 significant (got a roll call vote), 59 substantive, 1 commemorative. Compare the Senate

Became law (4)

3 national policy · 1 technical

S. 2513 Veterans Benefits Improvement Act of 2024Became law Dec 23, 2024 · Armed Forces and National SecurityNational policy
S. 2795 A bill to amend title 38, United States Code, to extend and modify certain authorities and requirements relating to the Department of Veterans Affairs, and for other purposes.Became law Oct 6, 2023 · Armed Forces and National SecurityTechnical
S. 30 Fiscal Year 2023 Veterans Affairs Major Medical Facility Authorization ActBecame law Jul 18, 2023 · Armed Forces and National SecurityNational policy
S. 777 Veterans' COLA Act of 2023Became law Jun 14, 2023 · Armed Forces and National SecurityNational policy

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

How Tester’s ratings compare with every senator

Ratings, 118th Congress

Scores run 0–100 and always sit next to a median. Each tick is one senator; the ringed marker is Tester. Medians and ranks are among everyone who served in the 118th Congress’s Senate.

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

Attendance

How it’s measured

97/ 100

Chamber median 97 · 24 missed of 691

Voted on 667 of 691 roll calls; missed 24. Higher than 50% of senators.

50%100%

Party loyalty

How it’s measured

95/ 100

Senate D median 99 · Rank 51 of 53

Sided with the Democratic majority on 512 votes that split the parties. Lower than 79% of senators.

40%100%

Bipartisan

How it’s measured

23/ 100

Chamber median 18 · +5

Average agreement with members of the other party on contested votes. Higher than 86% of senators.

0%70%

Position

How it’s measured

−0.21

Democratic middle 80%: -0.48 to -0.21

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

LiberalConservative

Tester’s bills that became law

All bills

4 bills and joint resolutions sponsored in the 118th Congress, furthest along first. These are the bills counted in Tester’s effectiveness score.

3 national policy · 1 technical

S. 2513 Veterans Benefits Improvement Act of 2024Armed Forces and National Security · Became law Dec 23, 2024Substantive2.2k words National policy
S. 2795 A bill to amend title 38, United States Code, to extend and modify certain authorities and requirements relating to the Department of Veterans Affairs, and for other purposes.Armed Forces and National Security · Became law Oct 6, 2023Substantive189 words Technical
S. 30 Fiscal Year 2023 Veterans Affairs Major Medical Facility Authorization ActArmed Forces and National Security · Became law Jul 18, 2023Substantive356 words National policy
S. 777 Veterans' COLA Act of 2023Armed Forces and National Security · Became law Jun 14, 2023Substantive490 words National policy

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