Cynthia M. Lummis

Cynthia Marie Lummis Wiederspahn is an American attorney and politician serving as the junior United States senator from Wyoming since 2021. A member of the Republican Party, Lummis served as the U.S. representative for Wyoming's at-large congressional district from 2009 to 2017. She served in the Wyoming House of Representatives from 1979 to 1983 and from 1985 to 1993, in the Wyoming Senate from 1993 to 1995, and as the Wyoming State Treasurer from 1999 to 2007.

Source: Wikipedia • View full (CC BY-SA)

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Voting Record — 843

Yes71%

No26%

Present0%

Not Voting3%

Party align99%

Cross-party0%

SoupScore

District Map

Senate District (Statewide)

U.S. Census Bureau boundary data.

Social & Web

Official site X @SenLummis Facebook Instagram

External Resources

Wikipedia Ballotpedia VoteSmart GovTrack OpenSecrets

Cynthia M. Lummis

U.S. SenatorRepublicanWyoming

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Cynthia M.'s ATmosphere Activity

45 sponsored · 211 cosponsored

Recent ATmosphere posts, sponsorships, and cosponsorships.

No Bluesky profile connected for this member yet.

Sponsored Bills(45)

S. 4806 (119th)
A bill to clarify that the interconnection of large load facilities directly to facilities u…
S. 4619 (119th)
A bill to amend the Clean Air Act to exclude marginal wells from certain standards of perfor…
S. 4529 (119th)
A bill to require the Nuclear Regulatory Commission to allow the use of commercial-grade ste…
S. 4267 (119th)
A bill to codify certain Executive orders relating to nuclear energy.
S. 4146 (119th)
A bill to amend the Endangered Species Act of 1973 with respect to the listing of threatened…

Cosponsored Bills(211)

S. Res. 772 (119th)
A resolution expressing the sense of the Senate that under no circumstances should Samuel Ba…
Joined: 2026-06-17
S. 4787 (119th)
A bill to expedite resolution of certain administrative proceedings at the Department of the…
Joined: 2026-06-15
S. 4765 (119th)
A bill to provide for certain energy development, permitting reforms, and for other purposes…
Joined: 2026-06-11
S. 4762 (119th)
A bill to require the Secretary of Homeland Security to conduct annual assessments on threat…
Joined: 2026-06-11
S. 4775 (119th)
A bill to amend the Protection of Lawful Commerce in Arms Act to clarify liability protectio…
Joined: 2026-06-11

Leadership

No leadership roles

Committees

SoupScore Breakdown

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Voting History

843 total votes

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Recent roll calls with party-majority context so it is easier to scan how this member tends to vote.

Date	Bill	Question	Position	Party Maj	Align?	Result
2026-02-10	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (52-46)
2026-02-09	—	End debate	YES	YES	✓	Cloture Motion Agreed to (51-47)
2026-02-05	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (50-47)
2026-02-05	—	End debate	YES	YES	✓	Cloture Motion Agreed to (51-47)
2026-02-05	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (50-46)
2026-02-04	—	End debate	YES	YES	✓	Cloture Motion Agreed to (50-47)
2026-02-04	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (51-46)
2026-02-04	—	End debate	YES	YES	✓	Cloture Motion Agreed to (51-47)
2026-02-04	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (58-39)
2026-02-03	—	End debate	YES	YES	✓	Cloture Motion Agreed to (55-39)
2026-02-03	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (51-45)
2026-02-03	—	End debate	YES	YES	✓	Cloture Motion Agreed to (49-44)
2026-02-03	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (54-40)
2026-02-02	—	End debate	YES	YES	✓	Cloture Motion Agreed to (49-40)
2026-01-30	H.R. 7148 (119th)	Final passage	YES	YES	✓	Bill Passed (71-29, 3/5 majority required)
2026-01-30	—	Motion (Motion to Waive All Applicable Budgetary Discipline Re: Merkley Amdt. No. 4287)	NO	NO	✓	Motion Rejected (47-52, 3/5 majority required)
2026-01-30	H.R. 7148 (119th)	Vote on amendment	NO	NO	✓	Amendment Rejected (49-51, 3/5 majority required)
2026-01-30	H.R. 7148 (119th)	Kill the motion	NO	NO	✓	Motion to Table Agreed to (58-42)
2026-01-30	H.R. 7148 (119th)	Kill the motion	NO	NO	✓	Motion to Table Agreed to (58-42)
2026-01-30	H.R. 7148 (119th)	Kill the motion	NO	NO	✓	Motion to Table Agreed to (67-33)
2026-01-30	H.R. 7148 (119th)	Vote on amendment	YES	YES	✓	Amendment Rejected (32-67)
2026-01-29	H.R. 7148 (119th)	End filibuster to begin debate	YES	YES	✓	Cloture on the Motion to Proceed Rejected (45-55, 3/5 majority required)
2026-01-27	S. 3627 (119th)	End filibuster to begin debate	YES	YES	✓	Cloture on the Motion to Proceed Rejected (47-45, 3/5 majority required)
2026-01-15	H.R. 6938 (119th)	Final passage	NO	YES	✕	Bill Passed (82-15)
2026-01-15	H.R. 6938 (119th)	End debate	YES	YES	✓	Cloture Motion Agreed to (85-14, 3/5 majority required)
2026-01-14	S.J. Res. 98 (119th)	Point of Order S.J.Res. 98	YES	YES	✓	Point of Order Well Taken (50-50, Vice President of the United States, voted Yea)
2026-01-13	S.J. Res. 84 (119th)	Begin consideration	NO	NO	✓	Motion to Proceed Rejected (47-52)
2026-01-12	H.R. 6938 (119th)	End filibuster to begin debate	YES	YES	✓	Cloture on the Motion to Proceed Agreed to (80-13, 3/5 majority required)
2026-01-08	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (53-40)
2026-01-08	S.J. Res. 98 (119th)	Motion to Discharge S.J.Res. 98	NO	NO	✓	Motion to Discharge Agreed to (52-47)
2026-01-07	S.J. Res. 86 (119th)	Begin consideration	NO	NO	✓	Motion to Proceed Rejected (43-50)
2026-01-06	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (52-48)
2026-01-06	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (53-47)
2026-01-05	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (50-35)
2025-12-18	—	End debate	YES	YES	✓	Cloture Motion Agreed to (51-42)
2025-12-18	—	End debate	YES	YES	✓	Cloture Motion Agreed to (60-35)
2025-12-18	—	End debate	YES	YES	✓	Cloture Motion Agreed to (58-36)
2025-12-18	—	End debate	YES	YES	✓	Cloture Motion Agreed to (53-43)
2025-12-18	S. Res. 532 (119th)	Confirm nominee	YES	YES	✓	Nomination Confirmed (53-43)
2025-12-18	S.J. Res. 82 (119th)	Approve resolution	NO	NO	✓	Joint Resolution Defeated (50-50)
2025-12-17	S. Res. 412 (119th)	End debate	YES	YES	✓	Cloture Motion Agreed to (53-47)
2025-12-17	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (71-29)
2025-12-17	—	End debate	YES	YES	✓	Cloture Motion Agreed to (69-27)
2025-12-17	—	Confirm nominee	YES	YES	✓	Nomination Confirmed (67-30)
2025-12-17	—	End debate	YES	YES	✓	Cloture Motion Agreed to (67-30)
2025-12-17	S. 1071 (119th)	Accept House changes	YES	YES	✓	Motion Agreed to (77-20)
2025-12-15	S. 1071 (119th)	End debate	YES	YES	✓	Cloture Motion Agreed to (76-20, 3/5 majority required)
2025-12-11	S. 1071 (119th)	Begin consideration	YES	YES	✓	Motion to Proceed Agreed to (75-22)
2025-12-11	S. Res. 532 (119th)	Approve resolution	YES	YES	✓	Resolution Agreed to (52-47)
2025-12-11	S. 3385 (119th)	End debate	NO	NO	✓	Cloture Motion Rejected (51-48, 3/5 majority required)

Alignment stats consider only votes where a clear yes/no majority existed for the legislator's party. Cross-party marks divergence where the vote matched the opposite party majority. ↔ indicates cross-party divergence.

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