Nonpartisan · Data from OpenStates / Plural Policy · Oklahoma
Republican
· Representative
Mark Chapman
Represents District 12 in the House of Representatives.
Votes with Republicans
93%
on 344 party-line votes · House Republicans median 91%
Cast a vote
93%
Yea or Nay on 1,969 of 2,120 roll calls · House median 95%
Their bills that became law
6 of 27
as a primary sponsor, this session · Republicans median 9
Roll calls on record
2,120
2026 Regular Session
Votes and bills updated Oct 5, 2026 from LegiScan (CC BY 4.0), which republishes the legislature’s own records. Profile details from OpenStates / Plural Policy. Figures cover 2026 Regular Session.
How Mark Chapman votes
A party-line vote is a roll call where most voting Democrats and most voting Republicans took opposite sides. Absences and not-voting are never counted. Same method as our Congress pages.
Where Mark Chapman sits in the House
Each dot is one member of the House, placed by how often they voted on the Democratic side of party-line votes. Mark Chapman is circled.
Always on the Republican sideAlways on the Democratic side
Times they broke with their party
25 of 344 party-line votes, most recent 10 shown.
HB2115 · Public assistance programs; directing the Department of Human Services to administer certain programs; federal funds; requirements; transferring certain powers, duties, records, assets and monies to the Department; effective date.
House: FOURTH READING · 2026-05-05 · Failed 39–41 · most Republicans voted the other way
SB1730 · Sex offenders; requiring law enforcement officers to submit a report or complaint for official investigation to the Oklahoma State Bureau of Investigation in certain circumstances. Effective date.
House: THIRD READING · 2026-04-29 · Passed 52–29 · most Republicans voted the other way
HB4036 · Bringing Sitcoms Home from Hollywood Pilot Program Revolving Fund; making an appropriation; source; purpose; noncodification.
House: THIRD READING · 2026-04-14 · Passed 53–42 · most Republicans voted the other way
HB3383 · State employees; working hours; emergency conditions; Office of Management and Enterprise Services.
House: THIRD READING · 2026-03-25 · Failed 46–51 · most Republicans voted the other way
HB3983 · Cigarettes; cigarette excise taxes; stamps; effective date.
House: THIRD READING · 2026-03-25 · Passed 51–40 · most Republicans voted the other way
HB3131 · Homeless shelter standards; creating the Oklahoma Homeless Shelter Safety and Accountability Act; statewide standards; funds; rulemaking; reporting; procedures; sunset; effective date.
House: THIRD READING · 2026-03-25 · Passed 65–31 · most Republicans voted the other way
HB4490 · Maternal care; Oklahoma Families Thriving Everywhere Now (OFTEN) Revolving Fund; appropriations; effective date.
House: RECONSIDER MEASURE · 2026-03-25 · Passed 52–37 · most Republicans voted the other way
HB3881 · Vape products; Alternative Nicotine Products Regulatory Act of 2026; terms; manufacturing, labeling, marketing, and safety requirements; attestation; penalties and suspension; enforcement; Attorney General; Alternative Nicotine Products Compliance Fund; effective date.
House: THIRD READING · 2026-03-24 · Passed 52–42 · most Republicans voted the other way
HB3178 · Revenue and taxation; ad valorem; depreciation schedule; fair cash value; farm equipment and farm tractors; Oklahoma Tax Commission; effective date.
House: THIRD READING · 2026-03-16 · Failed 43–45 · most Republicans voted the other way
HB1979 · Children; Early Childhood Task Force; membership; election; reports; compensation or reimbursement; expenses; Open Records Act; Open Meeting Act; advice; vision statement; mission; principles; codification; effective date.
House: THIRD READING · 2026-03-16 · Passed 46–43 · most Republicans voted the other way
Closest votes they cast
Roll calls decided by the fewest votes, one per bill.
SB1365 · Central Purchasing Act; exempting certain purchases made by the Oklahoma Tourism and Recreation Department.
House: THIRD READING · 2026-04-28 · Passed 43–42
HB3127 · Medical marijuana; policy for applicants and employees; exceptions; effective date.
House: THIRD READING · 2026-03-12 · Passed 47–46
HB3270 · Farmed cervidae; Farmed Cervidae Act; exempting certain actions from violating act; deer; genetic resistance; release into native populations; permits; changing department that issues to Department of Agriculture, Food and Forestry; emergency.
House: Energy and Natural Resources Oversight Committee: DO PASS AS AMENDED BY CS · 2026-02-25 · Passed 6–5
HB1104 · Counties and county officers; lodging taxes levied by counties; permitting three percent lodging tax; requiring to proceeds to promote tourism; effective date.
House: THIRD READING · 2025-03-24 · Passed 48–47
HB1493 · Schools; the Growing Minds, Active Kids Act; requiring school districts to incorporate thirty minutes of daily recess for certain grades.
House: EMERGENCY · 2025-03-12 · Failed 41–42
Democrats they vote with most
Share of contested roll calls (the losing side got at least 10%) where both voted and landed on the same side. Unanimous votes are left out, because on those everyone agrees.
Suzanne SchreiberDemocrat · District 70 · 650 shared contested votes
65%
Ajay PittmanDemocrat · District 99 · 318 shared contested votes
60%
Ellyn HefnerDemocrat · District 87 · 607 shared contested votes
59%
Their session, month by month
Dark bars are roll calls they were recorded on each month; the red part is the ones without a Yea or Nay (151 in all). Gaps are months the chamber wasn’t voting.
← Oklahoma Delegation
AbsentYeaAbsentYeaYeaAbsentYeaYeaYeaYeaYeaNayAbsentYeaYeaAbsentYeaYeaAbsentAbsentYeaYeaYeaYeaYeaYeaAbsentAbsentYeaYeaYeaAbsentAbsentYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaAbsentYeaYeaYeaYeaYeaAbsentYeaYeaYeaYeaYeaYeaYeaYea
Their bills, from filing to law
Bills Mark Chapman was a primary sponsor of this session. Most bills from either party never leave committee; in Illinois many never get past the Assignments or Rules committee.
Introduced27
Out of committee8
Passed one chamber7
Passed both chambers6
Became law6
Never left committee19
For comparison, the median Republican member of the House has 9 bills that became law this session.
Oklahoma State Bureau of Investigation; creating the Cyber Crime Fraud Unit; revolving fund. Effective date. Emergency.
Became lawApproved by Governor 05/22/2026 · 2026-05-29
Revenue and taxation; Small Employer Quality Jobs Act; definitions; eligibility criteria; effective date.
Became lawBecomes law without Governor's signature 05/13/2026 · 2026-05-13
Retirement; Oklahoma Law Enforcement Retirement System; contribution; top base salary; benefit computation; effective dates; contingent effective dates; emergency.
Became lawApproved by Governor 04/30/2026 · 2026-05-04
Elections; non-qualified electors; registration requirements for candidates; board of education; technology center school district; effective date.
Passed one chamberSecond Reading referred to Judiciary · 2026-04-01
State procurement; Procurement Protection Act of 2026; prohibiting certain entities from entering into contracts with certain companies; disclosure statements; penalties; exceptions; effective date.
Out of committeeAuthored by Senator Frix (principal Senate author) · 2026-03-03
State procurement; creating the Procurement Protection Act of 2026. Effective date.
Not out of committeeCoauthored by Representative Chapman (principal House author) · 2026-03-02
Oklahoma State Bureau of Investigation; Cyber Crime and Fraud Unit; motor vehicle insurance policy renewals; revolving fund; effective date.
Not out of committeeRecommendation to the full committee; Do Pass, amended by committee substitute Appropriations and Budget Public Safety Subcommittee · 2026-02-23
Public finance; Federal Funds Reporting Requirements Act of 2026; effective date.
Not out of committeeSecond Reading referred to Rules · 2026-02-03
Oklahoma Constitution; Property Tax Policy Act of 2026; ballot title; filing.
Not out of committeeSecond Reading referred to Rules · 2026-02-03
Revenue and taxation; Oklahoma Revenue and Taxation Act of 2026; effective date.
Not out of committeeSecond Reading referred to Rules · 2026-02-03
Real property; title; parcels; definitions; exclusions; effective date.
Not out of committeeReferred to Civil Judiciary · 2026-02-03
Revenue and taxation; Oklahoma Property Tax Policy Act of 2026; effective date.
Not out of committeeSecond Reading referred to Rules · 2026-02-03
Oklahoma Constitution; ad valorem; veterans; partial exemption; ballot title; filing.
Not out of committeeSecond Reading referred to Rules · 2026-02-03
Data centers; Data Center Decommissioning Act; proper decommissioning; Oklahoma Corporation Commission; financial assurance; effective date.
Not out of committeeReferred to Government Modernization and Technology · 2026-02-03
Surplus property; Oklahoma Surplus Property Act; Oklahoma Highway Patrol; vehicles; law enforcement agencies; effective date.
Became lawBecomes law without Governor's signature 05/25/2025 · 2025-05-27
Descriptions are the legislature’s own synopsis. Bill data from LegiScan, CC BY 4.0.
Loading committees…
SB2 · 2026-05-14
Wind energy; providing setback requirements for certain affected counties; waiver; referral of question to eligible voters; zoning; construction; exemptions; database. (House: FOURTH READING)
HB1370 · 2026-05-14
Motor Fuel Tax Code; repealer; reduction in federal excise tax on gasoline or diesel fuel; emergency. (House: FOURTH READING)
SB1589 · 2026-05-14
Crimes and punishments; modifying scope of certain offense related to gambling. Effective date. (House: VETO OVERRIDE WITHOUT EMERGENCY)
SB893 · 2026-05-14
Property and critical infrastructure; creating the Military Installation and Critical Infrastructure Protection Act of 2025. Effective date. (House: FOURTH READING)
SJR52 · 2026-05-07
Joint resolution; approving certain proposed permanent rules of the Oklahoma Health Care Authority. (House: THIRD READING)
SB740 · 2026-05-07
Child sexual abuse; creating the Cindy Clemishire Act; creating Trey's Law. Effective date. (House: THIRD READING)
SJR49 · 2026-05-07
Joint resolution; repealing certain permanent rules of the Oklahoma Wildlife Conservation Commission. (House: THIRD READING)
SB650 · 2026-05-07
Public finance; cabinet secretary approval for salary increases in excess of specified percentage; limitation; rules; employee categories. Effective date. Emergency. (House: THIRD READING)
HB3021 · 2026-05-07
Schools; curriculum requirements for graduation; diploma pathway; State Department of Education; notice; seminar; English requirements financial literacy; alternate diploma; course availability; waiver; coursework; repealers; effective date; emergency. (House: FOURTH READING)
SB2063 · 2026-05-07
Entrepreneurial experience; enacting the Oklahoma Youth Entrepreneurs Promotion and Development Act of 2026. Effective date. (House: THIRD READING)
SB1614 · 2026-05-07
Teachers; induction program; funding sources; rules. Effective date. Emergency. (House: THIRD READING)
SB2143 · 2026-05-07
Ad valorem tax; authorizing use of digital visual technology for inspection of real property. Effective date. (House: THIRD READING)
SB1209 · 2026-05-07
Forcible entry and detainer; modifying time period for certain trial. Effective date. (House: RECONSIDER MEASURE)
SB633 · 2026-05-07
Children; Children's Code; enacting Leo's Law; fentanyl testing; child endangerment; appropriating funds. Effective date. (House: THIRD READING)
SB514 · 2026-05-07
Schools; student eligibility; virtual charter school students; Oklahoma Secondary School Activities Association (OSSAA) activities; policies. Effective date. (House: THIRD READING)
SB833 · 2026-05-07
Crimes and punishments; taking of crude oil or gasoline; making certain acts unlawful; effective date. (House: THIRD READING)
SJR53 · 2026-05-07
Joint resolution; approving certain proposed permanent rules of the Oklahoma Medical Marijuana Authority. (House: THIRD READING)
HJR1101 · 2026-05-07
Joint Resolution; Oklahoma Medical Marijuana Authority; approving certain proposed permanent rules; directing distribution. (House: THIRD READING)
HB3320 · 2026-05-07
Sunsets; removing sunsets from certain agencies, boards, and commissions; repealing the Oklahoma Sunset Act; repealers; emergency. (House: VETO OVERRIDE WITH EMERGENCY)
SB382 · 2026-05-07
Commercial driver licenses; prohibiting issuance to certain individuals; persons not to be licensed; Service Oklahoma to make certain verification. Effective date. (House: THIRD READING)
SJR50 · 2026-05-07
Constitutional amendment; Medicaid funding. (House: THIRD READING)
SB1884 · 2026-05-07
School employees; modifying the access statewide professional educators' associations have to school employees; allowing termination of certain membership at any time. Effective date. Emergency. (House: THIRD READING)
SB1090 · 2026-05-07
Contracts; creating the Oklahoma Homeowner Repair Contract Protection Act. Effective date. (House: THIRD READING)
SB122 · 2026-05-07
Motor vehicles; certification of existence of security; valid insurance. Effective date. (House: THIRD READING)
HB4432 · 2026-05-06
Revenue and taxation; adjustments; eliminating limitation on itemization of wagering losses for certain tax years; effective date. (House: VETO OVERRIDE WITHOUT EMERGENCY)
HB2894 · 2026-05-06
Oklahoma Rural Jobs Act; cap on capital investment tax credits; authorizing and limiting additional participation in program under certain conditions. (House: FOURTH READING)
HB4431 · 2026-05-06
Professions and occupations; Pharmacy Act; references; prescribing authority for certain persons; repealers; effective date. (House: FOURTH READING)
HB1687 · 2026-05-06
Advance health care directives; creating the Uniform Health Care Decisions Act of 2026; establishing requirements for certain health care directives; effective date. (House: FOURTH READING)
HB2979 · 2026-05-06
Motor vehicles; creating the Talyn Bain Act; requiring the Department of Transportation establish school zones on certain state highways upon request; effective date. (House: FOURTH READING)
HB3781 · 2026-05-06
Insurance; rate may not be excessive, inadequate or unfairly discriminatory; expiration; effective date. (House: FOURTH READING)
HB3298 · 2026-05-06
Civil procedure; Uniform Judicial Interview of Children Act; terms; scope; judicial officer; judicial interview; considerations; training; procedure; record; codification; effective date. (House: FOURTH READING)
HB3996 · 2026-05-06
Crimes and punishments; capital cases; Indigent Defense System to make certain payments and provide certain experts; effective date. (House: FOURTH READING)
HB4428 · 2026-05-06
Public finance; terms; Board of Trustees; votes; proxy proposal; pecuniary factors; exception; report; publish; effective date. (House: FOURTH READING)
HB3262 · 2026-05-06
Fees; criminal and juvenile proceedings; increasing sheriff's service fee; effective date. (House: FOURTH READING)
SB1226 · 2026-05-06
Motor vehicles; expanding criteria by which a person must remain at scene or make notification of certain accident. Effective date. (House: THIRD READING)
HB2137 · 2026-05-06
Criminal procedures; resumption of competency; administration of medication; notification; authorization; effective date. (House: FOURTH READING)
HB3581 · 2026-05-06
Riots; penalties for participating; making certain acts unlawful; Governmental Tort Claims Act; exception; effective date. (House: FOURTH READING)
SB1876 · 2026-05-06
Service of process; modifying persons that may be appointed as agent. Effective date. (House: THIRD READING)
HB4427 · 2026-05-06
Adjunct teachers; annual report; qualifications; requirements; prohibiting adjunct teachers from teaching core curriculum subjects to certain grades; waiver; certificate; effective date. (House: FOURTH READING)
HB3834 · 2026-05-06
Ibogaine clinical trials; Oklahoma Breakthrough Therapy Act; terms; requirements for drug developers; contractual terms; intellectual property rights; reports; intellectual property account; effective date. (House: FOURTH READING)
HB3972 · 2026-05-06
Public finance; Ad Valorem Reimbursement Fund; school district revenue loss; state purchases; emergency. (House: FOURTH READING)
SB1916 · 2026-05-06
Insurance Department; creating certain division within the Insurance Department; establishing powers for certain conservator; allowing contacts. Effective date. (House: RECONSIDER MEASURE)
SB1916 · 2026-05-06
Insurance Department; creating certain division within the Insurance Department; establishing powers for certain conservator; allowing contacts. Effective date. (House: THIRD READING)
HB3467 · 2026-05-06
Education employees; maternity leave; adoption; purpose; effective date; emergency. (House: FOURTH READING)
HB3431 · 2026-05-06
Foreign government adversaries; alien and foreign government adversary ownership; foreign government adversary; mineral ownership; effective date. (House: FOURTH READING)
HB3979 · 2026-05-06
Public finance; Oklahoma Economic Development Pooled Finance Act; Infrastructure Pool; Economic Development Pool; caps; effective date; emergency. (House: FOURTH READING)
HB3650 · 2026-05-06
Medicaid; extending certain termination dates; establishing certain reimbursement rates for multistate contracts; effective date. (House: FOURTH READING)
SJR52 · 2026-05-06
Joint resolution; approving certain proposed permanent rules of the Oklahoma Health Care Authority. (House: Administrative Rules Committee: DO PASS)
SJR50 · 2026-05-06
Constitutional amendment; Medicaid funding. (House: Administrative Rules Committee: DO PASS)
SJR53 · 2026-05-06
Joint resolution; approving certain proposed permanent rules of the Oklahoma Medical Marijuana Authority. (House: Administrative Rules Committee: DO PASS)
HB3673 · 2026-05-06
Professions and occupations; term of license and registration certificates; renewal; prohibitions; reinstated licenses; application; continuing education requirements; effective date. (House: FOURTH READING)
HJR1023 · 2026-05-06
Workers' compensation; approving certain fee schedule; effective date; emergency. (House: FOURTH READING)
HB4095 · 2026-05-06
2-1-1 Collaborative; modifying powers and duties; modifying membership; specifying procedures for appointment, reappointment and removal of members; effective date. (House: FOURTH READING)
HB3462 · 2026-05-06
Professions and occupations; plumbing licenses; definitions; examinations; qualifications; effective date. (House: FOURTH READING)
SB1687 · 2026-05-06
Driver licenses; adding certain age requirement to qualification for certain license; permitting certain persons to proctor certain examination. Effective date. (House: THIRD READING)
HB3660 · 2026-05-06
Natural organic reduction; Class D1 criminal offenses; licenses; requiring certain records be maintained for certain time period; effective date. (House: FOURTH READING)
SB1238 · 2026-05-06
Assault and battery; modifying provisions of offense related to domestic abuse in presence of a child. Effective date. (House: THIRD READING)
HB3500 · 2026-05-06
Probate procedure; transfer-on-death deed; acceptance; timing; effective date. (House: FOURTH READING)
SB1326 · 2026-05-06
Self-Service Storage Facility Lien Act; permitting electronic delivery and acceptance of rental agreements. Effective date. (House: THIRD READING)
SB904 · 2026-05-06
Gender transition procedures; prohibiting certain use of public funds and state facilities; providing criminal penalty. Emergency. (House: THIRD READING)
Complete voting record from LegiScan (showing the 60 most recent of 2120 total roll-call votes this session).
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