Nonpartisan · Data from OpenStates / Plural Policy · Missouri
Republican
· State Senator
Mike Cierpiot
Represents District 8 in the State Senate.
Votes with Republicans
100%
on 17 party-line votes · Senate Republicans median 97%
Cast a vote
62%
Yea or Nay on 122 of 196 roll calls · Senate median 96%
Their bills that became law
0 of 9
as a primary sponsor, this session · Republicans median 2
Roll calls on record
196
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 Mike Cierpiot 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 Mike Cierpiot sits in the Senate
Each dot is one member of the Senate, placed by how often they voted on the Democratic side of party-line votes. Mike Cierpiot is circled.
Always on the Republican sideAlways on the Democratic side
Times they broke with their party
0 of 17 party-line votes.
They voted with most Republicans on every party-line vote this session.
Closest votes they cast
Roll calls decided by the fewest votes, one per bill.
SB938 · Modifies certain provisions relating to land surveying
Senate: Third Reading · 2026-02-26 · Passed 18–13
HB2097 · Changes a pilot agricultural education program in elementary schools to a statewide program
Senate: Third Reading · 2026-05-14 · Passed 19–12
HB2020 · Appropriates money for the expenses, grants, refunds, and distributions of the several departments and offices of state government
Senate: Conference Committee Report Adoption · 2026-05-06 · Passed 20–13
SB1023 · Modifies provisions relating to funding for certain libraries
Senate: Third Reading · 2026-04-02 · Passed 21–10
SB888 · Modifies provisions relating to the criminal systems
Senate: Third Reading · 2026-03-05 · Passed 20–9
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.
Brian WilliamsDemocrat · District 14 · 32 shared contested votes
56%
Maggie NurrenbernDemocrat · District 17 · 32 shared contested votes
56%
Barbara WashingtonDemocrat · District 9 · 29 shared contested votes
55%
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 (74 in all). Gaps are months the chamber wasn’t voting.
← Missouri Delegation
YeaYeaYeaYeaYeaAbsentAbsentAbsentAbsentAbsentYeaYeaYeaYeaYeaAbsentYeaYeaYeaAbsentAbsentAbsentNayAbsentAbsentYeaAbsentAbsentAbsentYeaAbsentAbsentAbsentAbsentAbsentYeaYeaYeaAbsentYeaYeaYeaAbsentAbsentAbsentAbsentYeaYeaAbsentYeaYeaYeaAbsentYeaYeaYea
Their bills, from filing to law
Bills Mike Cierpiot 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.
Introduced9
Out of committee0
Passed one chamber0
Passed both chambers0
Became law0
Never left committee9
For comparison, the median Republican member of the Senate has 2 bills that became law this session.
Modifies certain provisions relating to the means of energy production
Not out of committeeInformal Calendar S Bills for Third Reading · 2026-05-15
Establishes contribution limits for self-funded candidates
Not out of committeeSecond Read and Referred S Local Government, Elections and Pensions Committee · 2026-05-07
Modifies provisions relating to ballot measures
Not out of committeeHearing Cancelled S Local Government, Elections and Pensions Committee · 2026-02-02
Modifies provisions relating to property taxes
Not out of committeeSecond Read and Referred S Select Committee on Property Taxes and the State Tax Commission Committee · 2026-01-27
Modifies provisions relating to initiative petitions
Not out of committeeSecond Read and Referred S Local Government, Elections and Pensions Committee · 2026-01-27
Modifies provisions relating to amending birth certificates
Not out of committeeSecond Read and Referred S Families, Seniors and Health Committee · 2026-01-08
Reauthorizes an income tax deduction for certain savings accounts
Not out of committeeSecond Read and Referred S Economic and Workforce Development Committee · 2026-01-08
Moves school board elections to the November general election
Not out of committeeSecond Read and Referred S Local Government, Elections and Pensions Committee · 2026-01-08
Requires all elections for local tax increases to be held at a general or primary election
Not out of committeeSecond Read and Referred S Local Government, Elections and Pensions Committee · 2026-01-08
Descriptions are the legislature’s own synopsis. Bill data from LegiScan, CC BY 4.0.
Loading committees…
HB2896 · 2026-05-15
Modifies provisions relating to the governing bodies of certain public institutions of higher education (Senate: Third Reading)
HB1696 · 2026-05-15
Modifies provisions relating to the right of sepulcher (Senate: Third Reading)
HB2397 · 2026-05-15
Modifies requirements for a dissolution of a public water supply district (Senate: Conference Committee Report Adoption)
HB2397 · 2026-05-15
Modifies requirements for a dissolution of a public water supply district (Senate: Third Reading)
HB2885 · 2026-05-15
Requires all proceeds from boating registrations to be deposited in the water patrol division fund and used exclusively for the water patrol division (Senate: Third Reading)
SB973 · 2026-05-15
Creates and modifies provisions relating to real estate transactions (Senate: Conference Committee Report Adoption)
SB973 · 2026-05-15
Creates and modifies provisions relating to real estate transactions (Senate: Third Reading)
SB973 · 2026-05-15
Creates and modifies provisions relating to real estate transactions (Senate: Third Reading)
SB1572 · 2026-05-15
Modifies provisions relating to public employee retirement systems (Senate: Third Reading)
SB1572 · 2026-05-15
Modifies provisions relating to public employee retirement systems (Senate: Third Reading)
HB2474 · 2026-05-15
Modifies provisions governing design-build contracts (Senate: Third Reading)
HB2474 · 2026-05-15
Modifies provisions governing design-build contracts (Senate: Third Reading)
SB1019 · 2026-05-15
Modifies several provisions relating to health care (Senate: Third Reading)
HB1768 · 2026-05-15
Modifies provisions relating to the classification of certain residential real property used for short-term rentals (Senate: Third Reading)
SB953 · 2026-05-15
Modifies provisions relating to environmental programs within the Department of Natural Resources (Senate: Third Reading)
HB1867 · 2026-05-15
Authorizes Joplin to increase a transient guest tax for tourism to no more than six percent upon a vote of the people (Senate: Third Reading)
HB3080 · 2026-05-15
Modifies the historic preservation tax credit and includes an emergency clause (Senate: Emergency Clause)
HB2292 · 2026-05-15
Modifies provisions relating to abuse and neglect reporting, including a requirement to report companion animal abuse (Senate: Third Reading)
HB1740 · 2026-05-14
Modifies provisions relating to driving while intoxicated (Senate: Third Reading)
HB2636 · 2026-05-14
Establishes the "Uniform Mortgage Modification Act" (Senate: Third Reading)
SB1544 · 2026-05-14
Modifies provisions relating to state designations (Senate: Third Reading)
SB1544 · 2026-05-14
Modifies provisions relating to state designations (Senate: Third Reading)
HB2097 · 2026-05-14
Changes a pilot agricultural education program in elementary schools to a statewide program (Senate: Third Reading)
SB905 · 2026-05-14
Modifies language relating to school protection officers and creates Missouri Rangers training program (Senate: Third Reading)
SB905 · 2026-05-14
Modifies language relating to school protection officers and creates Missouri Rangers training program (Senate: Third Reading)
HB2397 · 2026-05-14
Modifies requirements for a dissolution of a public water supply district (Senate: Third Reading)
HB2372 · 2026-05-13
Modifies provisions relating to health care (Senate: Third Reading)
HB1840 · 2026-05-13
Establishes an alert system to assist in the location of missing persons with developmental disabilities (Senate: Third Reading)
HB2596 · 2026-05-13
Modifies provisions relating to health benefit plans (Senate: Third Reading)
HB3231 · 2026-05-13
Establishes the "Missouri Innovation, Public Safety, and Accountability Act" (Senate: Third Reading)
HB2819 · 2026-05-13
Modifies provisions relating to certain cash transactions requiring rounding to the nearest five cent denomination (Senate: Conference Committee Report Adoption)
HB2819 · 2026-05-13
Modifies provisions relating to certain cash transactions requiring rounding to the nearest five cent denomination (Senate: Conference Committee Report Adoption)
SB1470 · 2026-05-13
Modifies duties and functions of the Joint Committee on Legislative Research (Senate: Conference Committee Report Adoption)
SB1470 · 2026-05-13
Modifies duties and functions of the Joint Committee on Legislative Research (Senate: Third Reading)
SB1470 · 2026-05-13
Modifies duties and functions of the Joint Committee on Legislative Research (Senate: Third Reading)
HB2818 · 2026-05-12
Modifies provisions governing annexation of territory outside the boundaries of a city (Senate: Third Reading)
HB1839 · 2026-05-12
Establishes provisions relating to civil liability for publishing or distributing material harmful to minors on the internet (Senate: Third Reading)
SB878 · 2026-05-12
Modifies provisions relating to pharmaceutical drugs and devices (Senate: Third Reading)
HB2819 · 2026-05-12
Modifies provisions relating to certain cash transactions requiring rounding to the nearest five cent denomination (Senate: Third Reading)
HB1940 · 2026-05-12
Changes the law regarding advertisements and orders of publication in newspapers (Senate: Conference Committee Report Adoption)
HB2057 · 2026-05-12
Modifies provisions relating to the establishment of certain entertainment districts (Senate: Third Reading)
HB2508 · 2026-05-12
Allows for a search of the series LLC in the SoS Business Entity website and to obtain a certificate of good standing (Senate: Third Reading)
HB2576 · 2026-05-12
Creates several new state designations (Senate: Reconsider)
HB2576 · 2026-05-12
Creates several new state designations (Senate: Third Reading)
HB1940 · 2026-05-07
Changes the law regarding advertisements and orders of publication in newspapers (Senate: Third Reading)
SB1233 · 2026-05-07
Modifies provisions relating to activities requiring licensure (Senate: Third Reading)
SB937 · 2026-05-07
Conveys certain state property (Senate: Third Reading)
SB937 · 2026-05-07
Conveys certain state property (Senate: Third Reading)
SB1694 · 2026-05-06
Authorizes incentives for downtown redevelopment (Senate: Third Reading)
HB2003 · 2026-05-06
Appropriates money for the expenses, grants, refunds, and distributions of the Department of Higher Education and Workforce Development (Senate: Conference Committee Report Adoption)
HB2003 · 2026-05-06
Appropriates money for the expenses, grants, refunds, and distributions of the Department of Higher Education and Workforce Development (Senate: Conference Committee Report Adoption)
HB2003 · 2026-05-06
Appropriates money for the expenses, grants, refunds, and distributions of the Department of Higher Education and Workforce Development (Senate: Conference Committee Report Adoption)
HB2003 · 2026-05-06
Appropriates money for the expenses, grants, refunds, and distributions of the Department of Higher Education and Workforce Development (Senate: Conference Committee Report Adoption)
HB2003 · 2026-05-06
Appropriates money for the expenses, grants, refunds, and distributions of the Department of Higher Education and Workforce Development (Senate: Conference Committee Report Adoption)
HB2003 · 2026-05-06
Appropriates money for the expenses, grants, refunds, and distributions of the Department of Higher Education and Workforce Development (Senate: Conference Committee Report Adoption)
HB2003 · 2026-05-06
Appropriates money for the expenses, grants, refunds, and distributions of the Department of Higher Education and Workforce Development (Senate: Conference Committee Report Adoption)
Complete voting record from LegiScan (showing the 60 most recent of 196 total roll-call votes this session).
Primary Office
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