Nonpartisan · Data from OpenStates / Plural Policy · Missouri
Republican
· State Representative
Mark Matthiesen
Represents District 107 in the House of Representatives.
Votes with Republicans
90%
on 116 party-line votes · House Republicans median 96%
Cast a vote
87%
Yea or Nay on 351 of 404 roll calls · House median 93%
Their bills that became law
0 of 14
as a primary sponsor, this session · Republicans median 0
Roll calls on record
404
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 Matthiesen 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 Matthiesen 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 Matthiesen is circled.
Always on the Republican sideAlways on the Democratic side
Times they broke with their party
12 of 116 party-line votes, most recent 10 shown.
HB1839 · Establishes provisions relating to civil liability for publishing or distributing material harmful to minors on the internet
House: HBs WITH SENATE AMENDMENTS HCS HBS 1839, 2921 & 3015, WITH SA 1 · 2026-05-13 · Passed 104–30 · most Republicans voted the other way
SB953 · Modifies provisions relating to environmental programs within the Department of Natural Resources
House: SBs 3rd READ – INFORMAL HCS SB 953, A.A. · 2026-05-12 · Passed 86–35 · most Republicans voted the other way
HB2009 · Appropriates money for the expenses, grants, refunds, and distributions of the Department of Corrections
House: BILLS IN CONFERENCE CCS SS SCS HCS HB 2009 · 2026-05-06 · Passed 102–39 · most Republicans voted the other way
HB2002 · Appropriates money for the expenses, grants, refunds, and distributions of the State Board of Education and Department of Elementary and Secondary Education
House: BILLS IN CONFERENCE CCS SS SCS HCS HB 2002 · 2026-05-06 · Passed 83–68 · most Republicans voted the other way
HB3239 · Establishes and modifies provisions relating to adult education
House: HBs 3rd READ – INFORMAL HCS HB 3239 · 2026-04-02 · Failed 55–95 · most Republicans voted the other way
HB2009 · Appropriates money for the expenses, grants, refunds, and distributions of the Department of Corrections
House: HABs FOR THIRD READING HCS HB 2009 · 2026-03-26 · Passed 107–39 · most Republicans voted the other way
HB2004 · Appropriates money for the expenses, grants, refunds, and distributions of the Department of Revenue and Department of Transportation
House: HABs FOR THIRD READING HCS HB 2004 · 2026-03-26 · Passed 91–50 · most Republicans voted the other way
HB2002 · Appropriates money for the expenses, grants, refunds, and distributions of the State Board of Education and Department of Elementary and Secondary Education
House: HABs FOR THIRD READING HCS HB 2002 · 2026-03-26 · Passed 85–70 · most Republicans voted the other way
HB2012 · Appropriates money for the expenses, grants, refunds, and distributions of statewide elected officials, the Judiciary, the Office of the State Public Defender, and the General Assembly
House: HABs FOR THIRD READING HCS HB 2012 · 2026-03-26 · Passed 84–61 · most Republicans voted the other way
HB2989 · Modifies provisions relating to gaming
House: HBs FOR THIRD READING HCS HB 2989, A.A. · 2026-02-18 · Passed 83–66 · most Republicans voted the other way
Closest votes they cast
Roll calls decided by the fewest votes, one per bill.
HB2989 · Modifies provisions relating to gaming
House: HBs FOR PERFECTION *HCS HB 2989, A.A. · 2026-02-16 · Failed 68–60
HB2426 · Establishes provisions relating to parental rights
House: HBs FOR THIRD READING HCS HB 2426 · 2026-04-30 · Passed 70–60
SB1002 · Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County
House: SBs 3rd READ – INFORMAL SS SB 1002 · 2026-05-15 · Passed 81–66
HB2002 · Appropriates money for the expenses, grants, refunds, and distributions of the State Board of Education and Department of Elementary and Secondary Education
House: BILLS IN CONFERENCE CCS SS SCS HCS HB 2002 · 2026-05-06 · Passed 83–68
HB2003 · Appropriates money for the expenses, grants, refunds, and distributions of the Department of Higher Education and Workforce Development
House: HABs FOR THIRD READING HCS HB 2003 · 2026-03-26 · Passed 83–66
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.
Marlene TerryDemocrat · District 66 · 172 shared contested votes
34%
Ian MackeyDemocrat · District 99 · 164 shared contested votes
34%
Mark SharpDemocrat · District 37 · 68 shared contested votes
28%
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 (53 in all). Gaps are months the chamber wasn’t voting.
← Missouri Delegation
YeaYeaYeaYeaYeaYeaYeaYeaYeaAbsentAbsentYeaYeaYeaYeaYeaYeaYeaNayYeaYeaYeaNayYeaYeaNayYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaYeaNayYeaYeaNayYeaYeaYeaYeaYeaNayYeaYeaNayNayYeaYeaYeaYea
Their bills, from filing to law
Bills Mark Matthiesen 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.
Introduced14
Out of committee5
Passed one chamber1
Passed both chambers0
Became law0
Never left committee9
For comparison, the median Republican member of the House has 0 bills that became law this session.
Modifies provisions governing mental health efforts in public schools
Not out of committeeReferred: Emerging Issues(H) · 2026-05-15
Establishes provisions relating to nuisance actions against racing facilities and race tracks
Not out of committeeReferred: Emerging Issues(H) · 2026-05-15
Modifies the provisions of the "Show-Me Sports Investment Act"
Not out of committeeReferred: Emerging Issues(H) · 2026-05-15
Exempts portable solar generation devices from public service commission regulations
Not out of committeeReferred: Emerging Issues(H) · 2026-05-15
Prohibits labor organizations from collecting payment for union dues from a new employee until such employee has worked at least two hundred fifty hours
Not out of committeeReferred: Emerging Issues(H) · 2026-05-15
Changes the definition of "qualified student" for the Missouri Empowerment Scholarship Accounts Program
Not out of committeeReferred: Emerging Issues(H) · 2026-05-15
Authorizes taxpayers to submit petitions to reduce local tax rate levies
Not out of committeeReferred: Emerging Issues(H) · 2026-05-15
Allows election challengers to be present any time ballots are being cast
Out of committeePlaced Back on Formal Perfection Calendar (H) · 2026-05-07
Reduces the assessment percentage of certain personal property and provides a personal property tax exemption for certain personal property upon adoption of a constitutional amendment authorizing such exemption
Out of committeePlaced Back on Formal Perfection Calendar (H) · 2026-04-29
Requires the office of childhood to design and develop placards that include a QR code containing a link to a child care facility's complaint investigations and inspection reports
Out of committeeReported Do Pass (H) – AYES: 11 NOES: 0 PRESENT: 0 · 2026-04-23
Modifies provisions relating to employment benefits for first responders
Out of committeeReferred: Rules – Administrative(H) · 2026-04-01
Changes the percentage of the cap on the inflationary growth factor for the assessment growth of real or personal property occurring within a political subdivision, defines assessment value, and adds provisions related to the sales ratio studies performed by the State Tax Commission
Passed one chamberSecond read and referred: Select Committee on Property Taxes and the State Tax Commission(S) · 2026-03-23
Prohibits personal property tax levies passed prior to January 1, 1975, from applying to motor vehicles
Not out of committeePublic Hearing Completed (H) · 2026-03-05
Requires the Air Conservation Commission to suspend by January 1, 2028, any motor vehicle emissions inspection program established under the Air Quality Attainment Act
Not out of committeeReferred: Government Efficiency(H) · 2026-02-12
Descriptions are the legislature’s own synopsis. Bill data from LegiScan, CC BY 4.0.
Loading committees…
SJR95 · 2026-05-15
Establishes the "Show-Me Prosperity Fund" (House: SJRs FOR THIRD READING SS SCS SJR 95)
SJR95 · 2026-05-15
Establishes the "Show-Me Prosperity Fund" (House: SJRs FOR THIRD READING SS SCS SJR 95)
SB1002 · 2026-05-15
Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County (House: SBs 3rd READ – INFORMAL SS SB 1002)
SB1002 · 2026-05-15
Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County (House: SBs 3rd READ – INFORMAL SS SB 1002)
SB1002 · 2026-05-15
Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County (House: SBs 3rd READ – INFORMAL SS SB 1002)
SB1002 · 2026-05-15
Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County (House: SBs 3rd READ – INFORMAL SS SB 1002)
SB1002 · 2026-05-15
Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County (House: SBs 3rd READ – INFORMAL SS SB 1002)
SB1135 · 2026-05-15
Creates "Bentley and Mason's Law" relating to child maintenance orders for certain persons convicted of the offense of driving while intoxicated (House: SBs 3rd READ – INFORMAL SS SB 1135)
SB1576 · 2026-05-15
Establishes the Missouri Ireland Trade Commission (House: SBs 3rd READ – INFORMAL SB 1576)
HB2636 · 2026-05-15
Establishes the "Uniform Mortgage Modification Act" (House: HBs WITH SENATE AMENDMENTS SS HB 2636, A.A.)
HB2636 · 2026-05-15
Establishes the "Uniform Mortgage Modification Act" (House: HBs WITH SENATE AMENDMENTS SS HB 2636, A.A.)
HB2896 · 2026-05-15
Modifies provisions relating to the governing bodies of certain public institutions of higher education (House: HBs WITH SENATE AMENDMENTS SS SCS HB 2896)
HB2896 · 2026-05-15
Modifies provisions relating to the governing bodies of certain public institutions of higher education (House: HBs WITH SENATE AMENDMENTS SS SCS HB 2896)
HB2896 · 2026-05-15
Modifies provisions relating to the governing bodies of certain public institutions of higher education (House: HBs WITH SENATE AMENDMENTS SS SCS HB 2896)
HB1696 · 2026-05-15
Modifies provisions relating to the right of sepulcher (House: HBs WITH SENATE AMENDMENTS SS SCS HCS HB 1696, A.A.)
HB1696 · 2026-05-15
Modifies provisions relating to the right of sepulcher (House: HBs WITH SENATE AMENDMENTS SS SCS HCS HB 1696, A.A.)
HB1696 · 2026-05-15
Modifies provisions relating to the right of sepulcher (House: HBs WITH SENATE AMENDMENTS SS SCS HCS HB 1696, A.A.)
SB1553 · 2026-05-15
Authorizes incentives for producing certain critical materials and pharmaceuticals (House: SBs 3rd READ – INFORMAL SS SB 1553)
SB1553 · 2026-05-15
Authorizes incentives for producing certain critical materials and pharmaceuticals (House: SBs 3rd READ – INFORMAL SS SB 1553)
SB890 · 2026-05-15
Repeals expired, terminated, sunset, and obsolete sections of law (House: SBs 3rd READ – INFORMAL SS SCS SB 890)
SB890 · 2026-05-15
Repeals expired, terminated, sunset, and obsolete sections of law (House: SBs 3rd READ – INFORMAL SS SCS SB 890)
SB913 · 2026-05-15
Modifies provisions relating to tax credits (House: SBs 3rd READ – INFORMAL SS SB 913)
SB913 · 2026-05-15
Modifies provisions relating to tax credits (House: SBs 3rd READ – INFORMAL SS SB 913)
SB1067 · 2026-05-15
Establishes the Uniform Public Expression Protection Act, which provides procedures for dismissal of actions based on public expression (House: SBs 3rd READ – INFORMAL SB 1067)
HB2576 · 2026-05-15
Creates several new state designations (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HS HB 2576)
HB2576 · 2026-05-15
Creates several new state designations (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HS HB 2576)
SB835 · 2026-05-15
Modifies provisions relating to court procedures (House: BILLS IN CONFERENCE CCS HCS SS SCS SBS 835 & 1111)
HB2397 · 2026-05-15
Modifies requirements for a dissolution of a public water supply district (House: HBs WITH SENATE AMENDMENTS SS HB 2397, A.A.)
HB2397 · 2026-05-15
Modifies requirements for a dissolution of a public water supply district (House: HBs WITH SENATE AMENDMENTS SS HB 2397, A.A.)
HB2292 · 2026-05-15
Modifies provisions relating to abuse and neglect reporting, including a requirement to report companion animal abuse (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HCS HB 2292, A.A.)
HB2292 · 2026-05-15
Modifies provisions relating to abuse and neglect reporting, including a requirement to report companion animal abuse (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HCS HB 2292, A.A.)
HB2292 · 2026-05-15
Modifies provisions relating to abuse and neglect reporting, including a requirement to report companion animal abuse (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HCS HB 2292, A.A.)
SJR87 · 2026-05-15
Modifies provisions relating to sheriffs (House: BILLS IN CONFERENCE CCS HCS SS SJR 87)
SB973 · 2026-05-15
Creates and modifies provisions relating to real estate transactions (House: BILLS IN CONFERENCE CCS HCS SS SCS SB 973)
HB2474 · 2026-05-15
Modifies provisions governing design-build contracts (House: HBs WITH SENATE AMENDMENTS SCS HCS HB 2474, A.A.)
HB2474 · 2026-05-15
Modifies provisions governing design-build contracts (House: HBs WITH SENATE AMENDMENTS SCS HCS HB 2474, A.A.)
SB1421 · 2026-05-15
Modifies provisions relating to public safety (House: BILLS IN CONFERENCE CCS SS SB 1421, E.C.)
SB1421 · 2026-05-15
Modifies provisions relating to public safety (House: BILLS IN CONFERENCE CCS SS SB 1421, E.C.)
SB1408 · 2026-05-15
Increases the maximum speed limit from 70 to 75 miles per hour on rural interstates and freeways (House: BILLS CARRYING REQUEST MESSAGES SB 1408)
SB1572 · 2026-05-14
Modifies provisions relating to public employee retirement systems (House: SBs 3rd READ – INFORMAL HCS SB 1572, A.A.)
HB1840 · 2026-05-14
Establishes an alert system to assist in the location of missing persons with developmental disabilities (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HCS HB 1840)
HB1840 · 2026-05-14
Establishes an alert system to assist in the location of missing persons with developmental disabilities (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HCS HB 1840)
SB1019 · 2026-05-14
Modifies several provisions relating to health care (House: SBs 3rd READ – INFORMAL HCS SB 1019, A.A.)
SB1019 · 2026-05-14
Modifies several provisions relating to health care (House: SBs 3rd READ – INFORMAL HCS SB 1019, A.A.)
SB1019 · 2026-05-14
Modifies several provisions relating to health care (House: SBs 3rd READ – INFORMAL HCS SB 1019, A.A.)
SB1019 · 2026-05-14
Modifies several provisions relating to health care (House: SBs 3rd READ – INFORMAL HCS SB 1019, A.A.)
HB2508 · 2026-05-14
Allows for a search of the series LLC in the SoS Business Entity website and to obtain a certificate of good standing (House: HBs WITH SENATE AMENDMENTS SS SCS HCS HB 2508)
HB2508 · 2026-05-14
Allows for a search of the series LLC in the SoS Business Entity website and to obtain a certificate of good standing (House: HBs WITH SENATE AMENDMENTS SS SCS HCS HB 2508)
SB1196 · 2026-05-14
Modifies provisions relating to grants for certain workforce training programs (House: SBs 3rd READ – INFORMAL HCS SS SB 1196, A.A., E.C.)
SB916 · 2026-05-14
Modifies provisions relating to sovereign immunity (House: SBs 3rd READ – INFORMAL SS SCS SB 916)
SB1033 · 2026-05-14
Creates provisions relating to the regulation of air quality (House: SBs 3rd READ – INFORMAL SS SB 1033)
SB1196 · 2026-05-14
Modifies provisions relating to grants for certain workforce training programs (House: SBs 3rd READ – INFORMAL HCS SS SB 1196, A.A., E.C.)
HB3231 · 2026-05-14
Establishes the "Missouri Innovation, Public Safety, and Accountability Act" (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HCS HBS 3231 & 2531)
HB3231 · 2026-05-14
Establishes the "Missouri Innovation, Public Safety, and Accountability Act" (House: HBs WITH SENATE AMENDMENTS SS#2 SCS HCS HBS 3231 & 2531)
HB2372 · 2026-05-14
Modifies provisions relating to health care (House: HBs WITH SENATE AMENDMENTS SS SCS HCS HB 2372, A.A.)
HB2372 · 2026-05-14
Modifies provisions relating to health care (House: HBs WITH SENATE AMENDMENTS SS SCS HCS HB 2372, A.A.)
HB1740 · 2026-05-14
Modifies provisions relating to driving while intoxicated (House: HBs WITH SENATE AMENDMENTS SS SCS HB 1740)
HB1740 · 2026-05-14
Modifies provisions relating to driving while intoxicated (House: HBs WITH SENATE AMENDMENTS SS SCS HB 1740)
SB975 · 2026-05-14
Modifies provisions relating to ambulance districts (House: BILLS IN CONFERENCE CCS HCS SS SB 975)
HB2596 · 2026-05-13
Modifies provisions relating to health benefit plans (House: BILLS IN CONFERENCE CCS SS HCS HB 2596)
Complete voting record from LegiScan (showing the 60 most recent of 404 total roll-call votes this session).
Primary Office
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