Tammy Duckworth

U.S. Senator · Illinois · Democrat

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

Effectiveness, 119th Congress so far

How it’s measured

1.19· expected 0.63

Above expectations

Rank 26 of 100 in the Senate · expected = average of 29 minority-party members without a committee lead

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

57 bills and joint resolutions sponsored: 1 significant (got a roll call vote), 53 substantive, 3 commemorative. Compare the Senate

Became law (1)

1 national policy

S. 260 Bottles and Breastfeeding Equipment Screening Enhancement ActEnhances screening procedures for bottles and breastfeeding equipment in transportation security. AI-readBecame law Nov 25, 2025 · Transportation and Public WorksNational 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 Duckworth’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 Duckworth.

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

Attendance

How it’s measured

93/ 100

Chamber median 98 · 60 missed of 915

Voted on 855 of 915 roll calls; missed 60. Lower than 93% of senators.

85%100%

Party loyalty

How it’s measured

98/ 100

Senate D median 96 · Rank 15 of 47

Sided with the Democratic majority on 785 votes that split the parties. Lower than 58% of senators.

75%100%

Bipartisan

How it’s measured

6/ 100

Chamber median 9 · −3

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

0%30%

Position

How it’s measured

−0.35

Democratic middle 80%: -0.51 to -0.23

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

LiberalConservative

Duckworth’s bills that passed the Senate or further

All bills

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

S. 260 Bottles and Breastfeeding Equipment Screening Enhancement ActEnhances screening procedures for bottles and breastfeeding equipment in transportation security. AI-readTransportation and Public Works · Became law Nov 25, 2025Substantive549 words National policy
S. 3258 Aviation Medication Transparency Act of 2026Requires the Federal Aviation Administration to publish and update a list of medications safe for pilots and air traffic controllers. AI-readTransportation and Public Works · Introduced Oct 1, 2026Substantive794 words Introduced
S. 289 Youth Poisoning Protection ActBans consumer products containing 10% or greater concentration of sodium nitrite with specified exceptions. AI-readCommerce · Introduced Aug 10, 2026Substantive305 words Introduced
S. 1440 Uniformed Services Leave Parity ActEqualizes leave benefits for uniformed service members and federal civilian employees. AI-readHealth · Introduced Oct 17, 2025Substantive76 words Introduced

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