Photo: Oklahoma Legislative Service Bureau, Photo Division (public domain), via Wikimedia Commons

12House
District

Representative

Mark Chapman

Seat	House District 12
Party	Republican
Capitol office	Room 300 · 3rd floor
Mailing address	2300 N. Lincoln Blvd., Room 300, Oklahoma City, OK 73105
Capitol phone	(405) 557-7388
Legislative assistant	Brittney Andaya
Write to	mark.chapman@okhouse.gov (House constituent-mail address)
Hometown	Broken Arrow
Tenure	60th Legislature - Present
Term limited	2036

Also listed in Room 300: Mike Dobrinski, Ross Ford, Stan May

Committees 6

Energy and Natural Resources Oversight › Utilities Vice Chair subcommittee
Administrative Rules standing
Appropriations and Budget › A&B Health Subcommittee subcommittee
Conference Committee on Administrative Rules conference
Conference Committee on Energy and Natural Resources Oversight conference
Energy and Natural Resources Oversight standing

Bills, 2026 session 27 as principal author · 31 as coauthor

All 27 bills as principal author ›

Coauthor of HB 3413, HB 3418, HB 2992, HB 4118, HB 3464, HB 3419, HB 3415, HB 3417, HB 3416, HB 3414, HB 3420, HR 1031 and 19 more.

2025 · 2024 sessions · About the momentum score

Vote record, 2026 session 2,142 roll calls

1855 Yes131 No156 Excused0 Other / not voting

Latest 15 votes shown. Member votes from Open States roll calls (from oklegislature.gov vote records).

Effectiveness 60th Legislature, 2025–26

0.6461st of 99 in the House
39th percentile

Bills & joint resolutions authored	25
… passed committee / chamber / both	10 / 6 / 5
… became law	5
Carried in the other chamber (became law)	2 (1)
Points vs. House majority average	61 ÷ 95.19 = 0.64
Floor roll calls / missed	1,932 / 156 (8.1%)
Party unity on contested votes	84.7% of 732
Most-authored topics	Budget & taxes (9), State government & agencies (5), Criminal justice & public safety (2)

House rankings · How the score works. A count of bill progress, not a judgment of the member's work.

Closest allies co-authorship and vote agreement, 2025–26

Most bills written together

Brian Hill RHouse 47 15 ⇄
Max Wolfley RHouse 95 15 ⇄
Denise Crosswhite Hader RHouse 41 14 ⇄
Mike Kelley RHouse 60 14 ⇄
Clay Staires RHouse 66 14 ⇄
Gabe Woolley RHouse 98 14 ⇄
Julie McIntosh RSenate 3 14 ⇄
Nick Archer RHouse 55 13 ⇄
Mike Dobrinski RHouse 59 12 ⇄
Josh West RHouse 5 11 ⇄

Votes most alike

Kevin Norwood RHouse 74 85.8% of 345 contested votes
Jason Blair RHouse 53 85.6% of 644 contested votes
Brian Hill RHouse 47 84.3% of 610 contested votes
Mike Dobrinski RHouse 59 83.8% of 686 contested votes
Brad Boles RHouse 51 83.6% of 691 contested votes
Dell Kerbs RHouse 26 83.6% of 622 contested votes
Stan May RHouse 80 83.6% of 687 contested votes
Collin Duel RHouse 31 83.5% of 699 contested votes
John Pfeiffer RHouse 38 83.5% of 642 contested votes
Mark Lawson RHouse 30 83.3% of 580 contested votes

Votes least alike

Tom Gann RHouse 8 40.1% of 710
Molly Jenkins RHouse 33 41.7% of 725
Rick West RHouse 3 43.8% of 706
Trish Ranson DHouse 34 44.4% of 691
Cyndi Munson DHouse 85 44.9% of 635

“Written together” = substantive 2026-record bills on which both are principal author or coauthor (any chamber; coauthors read from action text). Agreement = same yes/no vote on contested floor roll calls in the same chamber, where both voted (at least 50 shared). Sharing bills or votes does not imply a personal or political alliance.

Lobbyist reports naming this member 2025–2026

Registered lobbyists reported 108 expenditures (meals, gifts, events) totalling $5,089.19 with this member as recipient, filed with the Oklahoma Ethics Commission. Names were matched by first and last name and title, so a few may be wrong; check the itemised records.

50 more lobbyists on OkLobbyGuide.

Lobbyist profiles open on OkLobbyGuide. A reported expenditure is a legal, disclosed activity and does not imply wrongdoing.

Source

Copied from https://www.okhouse.gov/representatives/mark-chapman on Oct 26, 2026. Not endorsed by the Oklahoma House of Representatives.