Thomas R. Carper

Former Senator from Delaware, 2001–2025 · Democrat

Record from the 118th Congress · From public records: votes from Voteview, bills from congress.gov, money from FEC filings · votes updated Nov 4, 2026 · How we measure

Effectiveness, 118th Congress

How it’s measured

2.01· expected 1.14

Above expectations

Rank 12 of 102 who served in the Senate that Congress · expected = average of 53 majority-party members

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

25 bills and joint resolutions sponsored: 2 significant (got a roll call vote), 23 substantive, 0 commemorative. Compare the Senate

Became law (2)

2 national policy

S. 4367 Thomas R. Carper Water Resources Development Act of 2024Became law Jan 4, 2025 · Water Resources DevelopmentNational policy
S. 3791 America’s Conservation Enhancement Reauthorization Act of 2024Became law Dec 23, 2024 · Environmental ProtectionNational 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 Carper’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 Carper. Medians and ranks are among everyone who served in the 118th Congress’s Senate.

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

Attendance

How it’s measured

99/ 100

Chamber median 97 · 4 missed of 691

Voted on 687 of 691 roll calls; missed 4. Higher than 89% of senators.

50%100%

Party loyalty

How it’s measured

99/ 100

Senate D median 99 · Rank 30 of 53

Sided with the Democratic majority on 533 votes that split the parties. Higher than 68% of senators.

40%100%

Bipartisan

How it’s measured

19/ 100

Chamber median 18 · +1

Average agreement with members of the other party on contested votes. Higher than 63% of senators.

0%70%

Position

How it’s measured

−0.18

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

Carper’s bills that made it out of committee or further

All bills

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

S. 4367 Thomas R. Carper Water Resources Development Act of 2024Water Resources Development · Became law Jan 4, 2025SubstantiveText pending National policy
S. 3791 America’s Conservation Enhancement Reauthorization Act of 2024Environmental Protection · Became law Dec 23, 2024Substantive1.9k words National policy
S. 2195 Diesel Emissions Reduction Act of 2023Environmental Protection · Introduced May 10, 2024Substantive43 words Introduced
S. 2958 Strengthening Coastal Communities Act of 2023Public Lands and Natural Resources · Introduced Apr 20, 2024SubstantiveText pending Introduced
S. 1194 Recycling and Composting Accountability ActEnvironmental Protection · Introduced Mar 15, 2024SubstantiveText pending Introduced
S. 2924 STEP ActGovernment Operations and Politics · Out of committee Dec 12, 2024Substantive2.1k words Out of committee
S. 654 Delaware River Basin Conservation Reauthorization Act of 2023Water Resources Development · Out of committee Sep 27, 2023Substantive282 words Out of committee
S. 2959 Brownfields Reauthorization Act of 2023Environmental Protection · Out of committee Sep 27, 2023Substantive675 words Out of committee

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