U.S. Senate · Maine

Sen. Susan M. Collins

Republican Serving since Jan. 7, 1997Term ends Jan. 3, 2027
Compare Official website ↗
Votes with own party 83% 13 pts below expected Lowest of all 53 Senate Republicans Votes with the President 91% 7 pts below expected 74% on legislation only Bipartisan bills led 89 More than 89% of Senate members Liberal-to-conservative rank 49thpercentile in all of Congress · Most liberal of 272 Republicans

Where they sit

Seated by voting record in the Senate. Percentiles run from 0 (most liberal) to 100 (most conservative).

How this is measured →
Collins
← Most liberalThe aisleMost conservative →
Votes with DemocratsCrosses party linesVotes with Republicans

Susan M. Collins's seat is marked. Seats run from most liberal (left) to most conservative (right). Color shows how often each member crosses party lines toward the middle on votes that divide the parties: solid blue or red means almost never, and purple means on at least 1 in 10 of those votes. Gray seats are members too new to score. How this is measured

All of Congress49thpercentile
More liberal than 51% of all members of Congress.
Most liberalMost conservative
260th most liberal of 531
Republicans in Congress0thpercentile
More liberal than 100% of Republicans in Congress.
Most liberalMost conservative
Most liberal of 272
The Senate47thpercentile
More liberal than 52% of Senate members.
Most liberalMost conservative
48th most liberal of 100

This score measures who votes with whom. A member who votes no because a bill goes too far, or not far enough, can look more moderate than their views.

With their party and with the President

How this is measured →
Votes with own party
83%
Q1 2025: 91% → Q3 2026: 78%

Lowest of all 53 Senate Republicans.

Actual83%
Expected96%
Difference−13 pts

Expected is the typical score for senators of the same party whose states voted like this one for president in 2024.

Democrats Republicans 65%100%

Each line is one Senate member, grouped by party. The dot is Susan M. Collins. The dark line is what we'd expect given how this state voted for president in 2024.

On 840 votes that split the partiesReal votes only: 78%See the 840 votes
How this is measured
Votes with the President
91%all votes
Q1 2025: 96% → Q3 2026: 81%

Lower than 50 of 53 Senate Republicans.

Actual91%
Expected98%
Difference−7 pts

Expected is the typical score for senators of the same party whose states voted like this one for president in 2024.

Democrats Republicans 0%100%

Each line is one Senate member, grouped by party. The dot is Susan M. Collins. The dark line is what we'd expect given how this state voted for president in 2024.

Based on 309 votes74% on legislation onlySee the 309 votes
How this is measured

Where they broke ranks

Votes where Susan M. Collins went against most of their party or against the President's stated position.

Every vote

Every roll call in the Senate this Congress, with how Susan M. Collins voted, how their party voted and the President's position.

DateVoteTheir voteMost of their partyPresident wantedResult
Loading…

A dash means the parties didn't split on that vote, or the President took no public position before it. “Party-line” and “President took a position” list exactly the votes each score counts: the ones cast Yes or No. Missed votes don't count either way and are under “Missed”.

Votes most like

Susan M. Collins and Angus S. King, Jr. voted the same way on 35% of votes.

Maine

Maine's delegation →

How Maine voted for president in 2024

Harris 52.4%Trump 45.5%

Contact

Phone
202-224-2523
Office
413 Dirksen Senate Office Building Washington DC 20510
Contact form
www.collins.senate.gov

Issue by issue

How often Susan M. Collins votes with their party, and with the President, on each kind of issue. Issues are the policy areas Congress assigns to each bill. "With their party" counts only votes where most Democrats and most Republicans voted on opposite sides; "With the President" counts only votes where he took a public position first.

Susan M. Collins sides with their party least often on Foreign Trade and International Finance (0%) and International Affairs (58%).

Susan M. CollinsAverage for Senate Republicans
  1. Foreign Trade and International Finance 0%Average 94% · 6 votes
  2. International Affairs 58%Average 97% · 31 votes
  3. Immigration 59%Average 96% · 34 votes
  4. Economics and Public Finance 59%Average 96% · 184 votes
  5. Taxation 71%Average 99% · 7 votes
  6. Public Lands and Natural Resources 80%Average 99% · 15 votes
  7. Armed Forces and National Security 80%Average 95% · 10 votes
  8. Finance and Financial Sector 84%Average 97% · 19 votes
  9. Energy 85%Average 100% · 13 votes
  10. Government Operations and Politics 85%Average 99% · 13 votes
  11. Environmental Protection 89%Average 100% · 18 votes
  12. Nominations 97%Average 100% · 449 votes
  13. Congress 100%Average 100% · 13 votes
  14. Transportation and Public Works 100%Average 100% · 12 votes

Fewer than 5 party-line votes, so not charted: Sports and Recreation (4 votes), Health (4 votes), Emergency Management (2 votes), Science, Technology, Communications (2 votes), Education (2 votes), Crime and Law Enforcement (1 vote), Families (1 vote).

Bipartisan bills led

3 passed their chamber · 1 became law

How this is measured →
How far each bill got:IntroducedPassed one chamberPassed both chambersBecame law

Votes: Voteview (UCLA). Bills: Congress.gov. President's positions: our public list. 2024 results by district: The Downballot. How this is measured · Corrections

Embed this on your site

Copy this code into your page. It shows a box with the latest numbers from Capitol Lens, with a credit line underneath. Free to use with the credit line.

Preview