U.S. Senator from Wyoming
Cynthia Lummis
Republican · Wyoming
Former House member and state treasurer, elected in 2020. First U.S. senator to publicly own Bitcoin. Pioneer in cryptocurrency legislation and digital assets regulation.
Record
Staunch fiscal conservative and cryptocurrency pioneer. Co-authored landmark crypto regulation framework. Extreme fiscal hawk — one of fewest senators to vote against nearly all spending. Strong energy advocate.
Legislative Record
Recently sponsored bills (8 on record)
- S.4956 — Farmers and Ranchers Relief Act of 2026 (Introduced, Jul 13, 2026)
- S.4806 — POWER Up Act (Introduced, Jun 17, 2026)
- S.4619 — Protect Domestic Oil and Gas Small Business Act of 2026 (Introduced, May 21, 2026)
- S.4529 — Build Nuclear with Local Materials Act of 2026 (Introduced, May 14, 2026)
- S.4267 — Strengthening American Nuclear Energy Act of 2026 (Introduced, Mar 26, 2026)
- S.4146 — Local Data for Better Conservation Act (Introduced, Mar 19, 2026)
- S.3836 — FENCES Act (Introduced, Feb 11, 2026)
- S.3611 — Blockchain Regulatory Certainty Act of 2026 (Introduced, Jan 12, 2026)
Notable votes
- Voted Yea on S.Res. 817 — S. Res. 817 (Resolution Agreed to, Jul 30, 2026)
- Voted Yea on S.Res. 817 — Motion to Invoke Cloture: S. Res. 817 (Cloture Motion Agreed to, Jul 29, 2026)
- Voted Yea on H.R. 6644 — Motion to Invoke Cloture: Motion to Concur in the House Amendment to the Senate Amendment to H.R. 6644 with an Amendment (SA 5823) (Cloture Motion Agreed to, Jun 18, 2026)
- Voted Yea on S. 2 — S. 2, As Amended (Bill Passed, Jun 5, 2026)
- Voted Nay on S. 2 — Cortez Masto Amdt. No. 5463 (Amendment Rejected, Jun 5, 2026)
- Voted Nay on S. 2 — Padilla Amdt. No. 5808 (Amendment Rejected, Jun 5, 2026)
- Voted Nay on S. 2 — Gallego Amdt. No. 5813 (Amendment Rejected, Jun 5, 2026)
- Voted Nay on S. 2 — Peters Amdt. No. 5763 (Amendment Rejected, Jun 5, 2026)
Recently cosponsored bills (12 on record)
- S.5179 — A bill to clarify that for purposes of Federal nondiscrimination requirements applicable to education programs or activities receiving Federal financial assistance, discrimination prohibited under title IX of the Education Amendments of 1972 is based on the biological reality of sex. (Introduced, Jul 30, 2026)
- S.5202 — A bill to prohibit the use of Federal funds for gender transition for minors. (Introduced, Jul 30, 2026)
- S.3101 — SAFE KIDS Act (Introduced, Jul 29, 2026)
- S.5090 — Digital Age Assurance Act of 2026 (Introduced, Jul 22, 2026)
- S.4952 — Protecting American Taxpayers Act (Introduced, Jul 20, 2026)
- S.1328 — Nuclear Family Priority Act (Introduced, Jul 16, 2026)
- S.5023 — Ban Birth Tourism Act of 2026 (Introduced, Jul 16, 2026)
- S.5025 — Lindsey O. Graham Sanctioning Russia Act of 2026 (Introduced, Jul 16, 2026)
Voting analysis
Cynthia Lummis holds two chairmanships that between them cover digital assets and nuclear energy — an unusual pairing, and one that matches her filings more closely than her voting record does.
Opposing her party's bills at passage
Her departures are weighted toward final outcomes rather than procedure. She voted against passage of bills the conference carried and against amendments it adopted, while supporting budget and appropriations amendments offered by colleagues that the majority rejected. On one measure she opposed both an adopted amendment and the bill that contained it.
| Roll call | Date | Outcome | Their vote |
|---|---|---|---|
| S.Con.Res. 33 Paul Amdt. No. 5378 On the Amendment S.Amdt. 5378 to S.Con.Res. 33 (No short title on file) · roll call 119 | Apr 23, 2026 | Amendment Rejected | Yea (party: Nay) |
| H.R. 6938 On Passage of the Bill H.R. 6938 · roll call 119 | Jan 15, 2026 | Bill Passed | Nay (party: Yea) |
| S. 2296 Paul Amdt. No. 3761 On the Amendment S.Amdt. 3761 to S.Amdt. 3748 to S. 2296 (No short title on file) · roll call 119 | Oct 9, 2025 | Amendment Rejected | Yea (party: Nay) |
| H.R. 3944 Mullin Amdt. No. 3412 On the Amendment S.Amdt. 3412 to S.Amdt. 3411 to H.R. 3944 (No short title on file) · roll call 119 | Aug 1, 2025 | Amendment Agreed to | Nay (party: Yea) |
| H.R. 3944 H. R. 3944, as amended On Passage of the Bill H.R. 3944 · roll call 119 | Aug 1, 2025 | Bill Passed | Nay (party: Yea) |
| H.R. 3944 Collins Amdt. No. 3411, as amended On the Amendment S.Amdt. 3411 to H.R. 3944 (No short title on file) · roll call 119 | Aug 1, 2025 | Amendment Agreed to | Nay (party: Yea) |
| H.R. 3944 Johnson Amdt. No. 3428 On the Amendment S.Amdt. 3428 to S.Amdt. 3411 to H.R. 3944 (No short title on file) · roll call 119 | Aug 1, 2025 | Amendment Rejected | Yea (party: Nay) |
| H.R. 3944 Scott (FL) Amdt. No. 3113, as modified On the Amendment S.Amdt. 3113 to S.Amdt. 3411 to H.R. 3944 (No short title on file) · roll call 119 | Aug 1, 2025 | Amendment Rejected | Yea (party: Nay) |
| H.R. 3944 Kennedy Amdt. No. 3414 On the Amendment S.Amdt. 3414 to S.Amdt. 3411 to H.R. 3944 (No short title on file) · roll call 119 | Aug 1, 2025 | Amendment Rejected | Yea (party: Nay) |
| H.R. 1 Lee Amdt. No. 2745 On the Amendment S.Amdt. 2745 to S.Amdt. 2360 to H.R. 1 (No short title on file) · roll call 119 | Jul 1, 2025 | Amendment Rejected | Yea (party: Nay) |
Both Wyoming seats
Wyoming sends two Republicans to the Senate, so the delegation comparison is between two individuals. Lummis departs more often than her colleague.
Among the 2 Republicans in the Wyoming delegation, the average rate of voting against the party majority is 9.4%. Cynthia Lummis is above that average at 12.4%.
What she legislates on
She chairs a banking subcommittee on digital assets and an environment subcommittee covering clean air, climate and nuclear innovation. Her bills sit squarely in the second of those: the Build Nuclear with Local Materials Act, the Strengthening American Nuclear Energy Act and the POWER Up Act, alongside the Farmers and Ranchers Relief Act and a measure protecting small domestic oil and gas businesses. Environmental protection and energy are the only subjects with more than one classified bill behind them.
Sponsored bills carry the Congressional Research Service's own subject classification. Cynthia Lummis's cluster into: Environmental Protection (4), Energy (3), Finance and Financial Sector (1).
Of the 8 most recent of those, 8 currently sit at Introduced.
Tenure and attendance
Her congressional service spans both chambers and reaches back far enough to place her among the veterans, under one party label throughout. Her absences are modest.
First elected in 2009, now serving across 7 terms. Cynthia Lummis falls in the veteran cohort.
By the numbers
In the 119th Congress, Cynthia Lummis has 245 bills sponsored, 2257 cosponsored, 8 recent floor votes recorded.
Committee assignments
- Senate Committee on Banking, Housing, and Urban Affairs
- Senate Committee on Commerce, Science, and Transportation
- Senate Committee on Environment and Public Works
- Senate Committee on Banking, Housing, and Urban Affairs: Digital Assets (Chairman)
- Senate Committee on Banking, Housing, and Urban Affairs: Financial Institutions and Consumer Protection
- Senate Committee on Banking, Housing, and Urban Affairs: Securities, Insurance, and Investment
- Senate Committee on Commerce, Science, and Transportation: Consumer Protection, Technology, and Data Privacy
- Senate Committee on Commerce, Science, and Transportation: Science, Manufacturing, and Competitiveness
- Senate Committee on Commerce, Science, and Transportation: Telecommunications and Media
- Senate Committee on Environment and Public Works: Clean Air, Climate, and Nuclear Innovation and Safety (Chairman)
- Senate Committee on Environment and Public Works: Fisheries, Wildlife, and Water
- Senate Committee on Environment and Public Works: Transportation and Infrastructure
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