Leaving office January 3, 2027.Lost re-election in 2026. This page switches to the former-officeholder layout when the term ends.

RepublicanIn office until January 3, 2027

Roger Marshall

U.S. Senator from Kansas since 2021. Lost re-election in 2026; leaves office in January 2027. Ran in 3 elections between 2016 and 2020, winning 3.

U.S. Senator from KansasBorn 1960Obstetrician

Official website Wikipedia Congress.gov FEC filings

In office: 5 yrs; Since 2021
Bills became law: 2; 74 sponsored, 119th Congress
Votes missed: 0.9%; Chamber median 2.1%
With party: 100%; On votes splitting the parties
Last margin: −5.1; Lost 2026
Elections: 4; 2016–2026

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Nov 7, 2026, 3:00 PM ET

Committees

119th Congress.

Senate Committee on Agriculture, Nutrition, and ForestryConservation, Forestry, Natural Resources, and Biotechnology · ChairmanFood and Nutrition, Specialty Crops, Organics, and Research
Senate Committee on FinanceEnergy, Natural Resources, and InfrastructureHealth CareInternational Trade, Customs, and Global Competitiveness
Senate Committee on Health, Education, Labor, and PensionsEmployment and Workplace SafetyPrimary Health and Retirement Security · Chairman
Senate Committee on the Budget

Source: congress-legislators committeesUpdated Nov 7, 2026, 3:00 PM ET

Legislation

119th Congress · 74 sponsored · 2 became law

BillIntroCmteSenateHouseLaw

S 2403 Retire through Ownership Act
Labor and Employment · Became law Oct 2026

S 222 Whole Milk for Healthy Kids Act of 2025
Agriculture and Food · Became law Jan 2026

Source: Congress.gov billsUpdated Nov 6, 2026, 3:27 PM ET

Voting record

119th Congress · placement by roll-call votes

Where Marshall sits in the U.S. Senate

Marshall is closer to the center than 35% of the chamber's Republicans.

Closest: Steve Daines, Mike Crapo, Katie Boyd Britt

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:06 PM ET

With Marshall’s party

Votes with the chamber's Republicans100%
Cosponsorships of the other party's bills20%

Black tick: the average of Republicans in the U.S. Senate.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

Votes chosen for their effect, not their side: Marshall’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.

Date	Bill	Marshall	Rep. majority	Dem. majority	Result
Jun 5, 2026	S 2: Secure America Act	Yes	Yes	No	Passed 52–47
Apr 16, 2026	HJRES 140: Providing for congressional disapproval under chapter 8 of title 5, United States Code,…	Yes	Yes	No	Passed 50–49
Feb 12, 2026	HJRES 142: Disapproving the action of the District of Columbia Council in approving the D.C.…	Yes	Yes	No	Passed 49–47
Jan 30, 2026	HR 7148: Consolidated Appropriations Act, 2026	Yes	Yes	No	Passed 71–29
Dec 4, 2025	HJRES 131: Providing for congressional disapproval under chapter 8 of title 5, United States Code,…	Yes	Yes	No	Passed 49–45

Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls

Career

Offices held, and every time Marshall was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

20162017201820192020202120222023202420252026202720282029U.S. House, KS-1 U.S. Senate, Kansas

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Elections

Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.

Year	Race	Result	Margin	Seat	+/−
2026	U.S. Senate, Kansas	Lost	D+5.1	R+16.4	−21.5
2020	U.S. Senate, Kansas	Won	R+11.4	R+15.0	−3.6
2018	U.S. House, KS-1	Won	R+36.3	—	—
2016	U.S. House, KS-1	Won	R+39.6	—	—