Markwayne Mullin

Born 1977-07-26 | Republican | OK

Not currently serving in Congress.
Official biography (Congress Bioguide)

Ideology score (-1 = most liberal, +1 = most conservative): 117th House: +0.53 (more conservative than 79% of the chamber); 118th Senate: +0.53 (more conservative than 75% of the chamber); 119th Senate: +0.53 (more conservative than 68% of the chamber) What is this?

Congress	Chamber	State	Party	Votes cast	Missed	Missed %	Party votes	With party	Unity %	Sponsored	Became law	Law %
117th	House	OK	Republican	956	40	4.0	561	553	98.6	19	0	0.0
118th	Senate	OK	Republican	652	39	5.6	504	478	94.8	23	0	0.0
119th	Senate	OK	Republican	683	40	5.5	634	629	99.2	19	1	5.3

Key votes

Vote	Date	Result	How they voted	Matched party majority?
Government funding law ending the 2025 shutdown (Senate)	2025-11-10	Bill Passed	Yea	Yes
One Big Beautiful Bill Act (Senate)	2025-07-01	Bill Passed	Yea	Yes
GENIUS Act (Senate)	2025-06-17	Bill Passed	Yea	Yes
Laken Riley Act (Senate)	2025-01-20	Bill Passed	Yea	Yes
Ukraine, Israel and Taiwan security funding (Senate)	2024-02-13	Bill Passed	Nay	Yes
Fiscal Responsibility Act (Senate)	2023-06-01	Bill Passed	Yea	No
Fiscal 2023 government funding law (House)	2022-12-23	Passed	Nay	Yes
Respect for Marriage Act (House)	2022-12-08	Passed	Nay	Yes
Inflation Reduction Act (House)	2022-08-12	Passed	Nay	Yes
CHIPS and Science Act (House)	2022-07-28	Passed	Nay	Yes
Bipartisan Safer Communities Act (House)	2022-06-24	Passed	Nay	Yes
Honoring our PACT Act (House)	2022-03-03	Passed	Nay	Yes
Infrastructure Investment and Jobs Act (House)	2021-11-05	Passed	Nay	Yes
American Rescue Plan Act (House)	2021-03-10	Passed	Nay	Yes
Impeachment of President Trump (House)	2021-01-13	Passed	Nay	Yes

About these votes

Voting patterns

Congress	Chamber	Against both parties	% of votes where parties agreed	With winning side %	Close votes	Voted on	Missed
117th	House	49	12.4	40.2	19	19	0
118th	Senate	18	12.5	29.7	191	177	14
119th	Senate	0	0.0	98.4	359	246	20

Votes most like theirs (119th Congress, Senate)

Member	Party	State	Agreement
Pete Ricketts	R	NE	99.7%
John Boozman	R	AR	99.7%
Mike Rounds	R	SD	99.6%
Deb Fischer	R	NE	99.6%
Cindy Hyde-Smith	R	MS	99.6%

Votes least like theirs (119th Congress, Senate)

Member	Party	State	Agreement
Christopher Murphy	D	CT	3.3%
Edward J. Markey	D	MA	3.5%
Bernard Sanders	D	VT	3.8%
Elizabeth Warren	D	MA	3.9%
Chris Van Hollen	D	MD	4.2%

Against both parties counts votes where the Democratic and Republican majorities took the same side and the member voted the other way. With winning side counts votes that matched the final outcome. A close vote is a roll call decided by 5 votes or fewer; absences can have many causes. Agreement is the share of votes both members cast on which they voted the same way (at least 100 shared votes). Independents who caucus with a party count as part of it, and delegates are left out of the party tallies. Counts cover members in this site's data and may differ slightly from official tallies.

Cosponsorship

Congress	Cosponsored	Across party	Across %	Avg cosponsors on own bills	Own bills with other-party cosponsor	Share %
117th	290	103	35.5	6.2	6	31.6
118th	184	52	28.3	4.2	10	43.5
119th	118	23	19.5	7.9	11	57.9

Cosponsorship counts bills and joint resolutions only. A cosponsorship is across party lines when the cosponsor and the bill's sponsor are in different parties; independents who caucus with a party count as part of it, and members outside both caucuses are left out of the percentages. Totals can differ slightly from Congress.gov because of withdrawn cosponsors. The 119th Congress is still in progress.

A party vote is a roll call where the Democratic and Republican majorities took opposite sides. Unity % is how often the member sided with their own party's majority on those votes. Sponsored counts bills and joint resolutions only. Became law means the bill itself was enacted; bills whose text was folded into other legislation are not counted. The 119th Congress is still in progress.