Nonpartisan · Data from OpenStates / Plural Policy · Wisconsin
Devin LeMahieu
Republican · Senator

Devin LeMahieu

Represents District 9 in the State Senate.

Official site ↗ Email
Votes with Republicans
100%
on 195 party-line votes · Senate Republicans median 99%
Cast a vote
100%
Yea or Nay on 271 of 271 roll calls · Senate median 100%
Their bills that became law
4 of 14
as a primary sponsor, this session · Republicans median 18
Roll calls on record
271
2025-2026 Regular Session
Votes and bills updated Oct 6, 2026 from LegiScan (CC BY 4.0), which republishes the legislature’s own records. Profile details from OpenStates / Plural Policy. Figures cover 2025-2026 Regular Session.

How Devin LeMahieu 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 Devin LeMahieu 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. Devin LeMahieu is circled.

Always on the Republican sideAlways on the Democratic side
Times they broke with their party

0 of 195 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.

AB248 · Vacancies in appointive state offices.
Yea
Senate: Read a third time and concurred in · 2026-03-17 · Passed 17–16
AB1034 · Name, image, and likeness rights for University of Wisconsin System student athletes; maintenance costs for University of Wisconsin–Madison intercollegiate athletic facilities; and making an appropriation. (FE)
In plain English Allows University of Wisconsin student athletes to profit from their name, image, and likeness, and funds athletic facility maintenance.
Yea
Senate: Read a third time and concurred in · 2026-03-17 · Passed 17–16
SB384 · Requirements for children born alive following abortion or attempted abortion and providing a penalty.
Yea
Senate: Read a third time and passed · 2026-02-11 · Passed 17–16
SB498 · Free speech and academic freedom at University of Wisconsin System institutions and technical colleges, due process in disciplinary proceedings at University of Wisconsin System institutions and technical colleges, and causes of action against the Board of Regents of the University of Wisconsin System and technical college district boards. (FE)
In plain English Requires University of Wisconsin System institutions and technical colleges to protect free speech and academic freedom, provide due process in disciplinary proceedings, and allows legal action against their governing boards.
Yea
Senate: Read a third time and passed · 2025-11-18 · Passed 17–16
AB39 · Requiring state employees to perform their work at the offices of their employer.
In plain English Requires state employees to perform their work at their employer's offices.
Yea
Senate: Read a third time and concurred in · 2025-10-14 · Passed 17–16
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.

Brad PfaffDemocrat · District 32 · 206 shared contested votes
16%
Sarah KeyeskiDemocrat · District 14 · 207 shared contested votes
13%
Jeff SmithDemocrat · District 31 · 207 shared contested votes
10%
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 (0 in all). Gaps are months the chamber wasn’t voting.

2025-01: 3 roll calls, 0 without a Yea or Nay2025-03: 9 roll calls, 0 without a Yea or Nay2025-04: 6 roll calls, 0 without a Yea or Nay2025-05: 11 roll calls, 0 without a Yea or Nay2025-06: 34 roll calls, 0 without a Yea or Nay2025-07: 29 roll calls, 0 without a Yea or Nay2025-10: 17 roll calls, 0 without a Yea or Nay2025-11: 24 roll calls, 0 without a Yea or Nay2026-01: 30 roll calls, 0 without a Yea or Nay2026-02: 51 roll calls, 0 without a Yea or Nay2026-03: 57 roll calls, 0 without a Yea or NayJan 2025Jan 2026Mar 2026
← Wisconsin Delegation
Their bills, from filing to law

Bills Devin LeMahieu 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 committee10
Passed one chamber6
Passed both chambers5
Became law4
Never left committee0

For comparison, the median Republican member of the Senate has 18 bills that became law this session.

Alternative methods of providing pupil transportation services. (FE)
An Act to amend 121.555 (1) (a), 121.555 (1) (b) and 121.555 (2) (a) of the statutes; Relating to: alternative methods of providing pupil transportation services. (FE)
VetoedFailed to pass notwithstanding the objections of the Governor pursuant to Joint Rule 82 · 2026-05-13
Name, image, and likeness rights for University of Wisconsin System student athletes; maintenance costs for University of Wisconsin–Madison intercollegiate athletic facilities; and making an appropriation. (FE)
An Act to amend 20.285 (1) (gj); to create 20.285 (1) (cj), 20.285 (1) (ck), 20.285 (1) (cL) and 36.11 (12) of the statutes; Relating to: name, image, and likeness rights for University of Wisconsin System student athletes; maintenance costs for University of Wisconsin–Madison intercollegiate…
FailedFailed to pass pursuant to Senate Joint Resolution 1 · 2026-03-23
Onetime individual income tax rebates. (FE)
An Act Relating to: onetime individual income tax rebates. (FE)
FailedFailed to pass pursuant to Senate Joint Resolution 1 · 2026-03-23
Funding for individual income tax rebates and making an appropriation. (FE)
An Act to create 20.835 (2) (cd) of the statutes; Relating to: funding for individual income tax rebates and making an appropriation. (FE)
FailedFailed to pass pursuant to Senate Joint Resolution 1 · 2026-03-23
Public affairs network request for proposals.
An Act Relating to: public affairs network request for proposals.
FailedFailed to concur in pursuant to Senate Joint Resolution 1 · 2026-03-23
An exemption from private detective and private security license and permit requirements.
An Act to create 440.26 (5) (bm) of the statutes; Relating to: an exemption from private detective and private security license and permit requirements.
FailedFailed to pass pursuant to Senate Joint Resolution 1 · 2026-03-23
Recognizing October 14, 2025, as First Responders Appreciation Day in Wisconsin.
Relating to: recognizing October 14, 2025, as First Responders Appreciation Day in Wisconsin.
FailedFailed to adopt pursuant to Senate Joint Resolution 1 · 2026-03-23
Advanced practice registered nurses, extending the time limit for emergency rule procedures, providing an exemption from emergency rule procedures, and granting rule-making authority. (FE)
An Act to repeal 50.01 (1b), 77.54 (14) (f) 3., 118.2925 (1) (b), 118.294 (1) (a), 146.89 (1) (r) 8., 252.01 (1c), 440.03 (13) (b) 3., 440.03 (13) (b) 42., 440.08 (2) (a) 4m., 440.08 (2) (a) 50., 441.11 (title), 441.11 (1), 441.11 (3), 441.15,…
FailedFailed to pass pursuant to Senate Joint Resolution 1 · 2026-03-23
Positions for the Office of School Safety. (FE)
An Act Relating to: positions for the Office of School Safety. (FE)
FailedFailed to pass pursuant to Senate Joint Resolution 1 · 2026-03-23
An incumbent transmission facility owner’s right to construct, own, and maintain certain transmission facilities and Public Service Commission procedures if the transmission facility is a regionally cost-shared transmission line.
An Act to repeal 196.485 (1) (cr), 196.485 (1) (ef) and 196.485 (3g); to create 196.485 (1) (cr), 196.485 (1) (ef) and 196.485 (3g) of the statutes; Relating to: an incumbent transmission facility owner’s right to construct, own, and maintain certain transmission facilities and Public…
FailedFailed to pass pursuant to Senate Joint Resolution 1 · 2026-03-23
Notifying the assembly and the governor that Timothy La Sage is elected senate sergeant at arms of the 2025-2026 senate.
Relating to: notifying the assembly and the governor that Timothy La Sage is elected senate sergeant at arms of the 2025-2026 senate.
Became lawAdopted, Ayes 18, Noes 14 · 2025-06-18
Requiring photographic identification to vote in any election (second consideration).
To create section 1m of article III of the constitution; Relating to: requiring photographic identification to vote in any election (second consideration).
Became lawPublished 5-20-2025. Enrolled Joint Resolution 1 · 2025-05-20
Notifying the assembly and the governor that Cyrus Anderson is elected senate chief clerk of the 2025-2026 senate.
Relating to: notifying the assembly and the governor that Cyrus Anderson is elected senate chief clerk of the 2025-2026 senate.
Became lawAdopted, Ayes 33, Noes 0 · 2025-04-22
Notifying the assembly and the governor that the 2025-2026 senate is organized.
Relating to: notifying the assembly and the governor that the 2025-2026 senate is organized.
Became lawAdopted, Ayes 21, Noes 12 · 2025-01-06

Descriptions are the legislature’s own synopsis. Bill data from LegiScan, CC BY 4.0.

Loading committees…
SB485 · 2026-03-17
Video monitoring or recording in residential care centers for children and youth, group homes, and shelter care facilities. (Senate: Decision of the Chair stands as the judgment of the Senate)
Passed · 18-15
Yea
SB485 · 2026-03-17
Video monitoring or recording in residential care centers for children and youth, group homes, and shelter care facilities. (Senate: Assembly Substitute Amendment 1 concurred in)
Passed · 32-1
Yea
AB373 · 2026-03-17
Creating a refundable individual income tax credit for the parent of a stillbirth and making an appropriation. (FE) (Senate: Read a third time and concurred in)
Passed · 32-1
Yea
SB622 · 2026-03-17
Fees related to animal markets, animal dealers, animal truckers, and animal transport vehicles. (FE) (Senate: Assembly Substitute Amendment 7 concurred in)
Passed · 20-13
Yea
AB375 · 2026-03-17
Modifications to the historic rehabilitation tax credit. (FE) (Senate: Read a third time and concurred in)
Passed · 31-2
Yea
AB619 · 2026-03-17
A tax credit for aviation biofuel manufacturing, authorizing the state to contract public debt for an aviation biofuel project grant, and making an appropriation. (FE) (Senate: Read a third time and concurred in)
Passed · 31-1
Yea
AB461 · 2026-03-17
An income tax subtraction for certain overtime compensation. (FE) (Senate: Decision of the Chair stands as the judgment of the Senate)
Passed · 18-15 · 3 roll calls that day, voted the same way on each
Yea
AB461 · 2026-03-17
An income tax subtraction for certain overtime compensation. (FE) (Senate: Read a third time and concurred in)
Passed · 21-12
Yea
AB24 · 2026-03-17
County sheriff assistance with certain federal immigration functions. (FE) (Senate: Senate Substitute Amendment 1 rejected)
Passed · 19-14
Yea
AB241 · 2026-03-17
Required ratio of journeyworkers to apprentices in apprenticeship programs and contracts. (Senate: Read a third time and concurred in)
Passed · 18-15
Yea
AB670 · 2026-03-17
Exempting persons engaged in certain contract research services from the sales and use tax. (FE) (Senate: Read a third time and concurred in)
Passed · 32-1
Yea
AB598 · 2026-03-17
Consent to admissions to certain health care facilities by patient representatives without requiring a petition for guardianship or protective placement. (FE) (Senate: Read a third time and concurred in)
Passed · 28-5
Yea
SB798 · 2026-03-17
A wetland assured delineation program, extending the time limit for emergency rule procedures, providing an exemption from emergency rule procedures, and granting rule-making authority. (FE) (Senate: Assembly Substitute Amendment 2 concurred in)
Passed · 32-1
Yea
AB460 · 2026-03-17
Pupil eligibility for parental choice programs based upon participation by a sibling or a dependent child of the pupil's parent or guardian. (FE) (Senate: Read a third time and concurred in)
Passed · 18-15
Yea
AB387 · 2026-03-17
Correction bill for 2025 Wisconsin Act 15 and making an appropriation. (Senate: Read a third time and concurred in)
Passed · 29-4
Yea
SB376 · 2026-03-17
A tax credit for employer-provided child care. (FE) (Senate: Assembly Substitute Amendment 1 concurred in)
Passed · 32-1
Yea
AB454 · 2026-03-17
A workforce home loan program. (FE) (Senate: Read a third time and concurred in)
Passed · 31-2
Yea
AB601 · 2026-03-17
Excluding certain event or sports wagers from the definition of “bet”. (Senate: Read a third time and concurred in)
Passed · 21-12
Yea
AB595 · 2026-03-17
Compliance with the federal Help America Vote Act, voter registration data sharing agreements, removing ineligible voters from the official voter registration list, and fees for obtaining the official voter registration list. (FE) (Senate: Read a third time and concurred in)
Passed · 18-15
Yea
AB968 · 2026-03-17
Virtual currency kiosks. (Senate: Read a third time and concurred in)
Passed · 33-0
Yea
AB659 · 2026-03-17
Tuition and fee remission or grants for certain veterans and their dependents enrolled in the University of Wisconsin System, a technical college, or a private nonprofit institution of higher education; and the University of Wisconsin System nonresident tuition exemption for certain veterans. (FE) (Senate: Senate Amendment 1 rejected)
Passed · 18-15
Yea
AB1027 · 2026-03-17
Requiring information relating to the food stamp program to be compiled and provided to the U.S. Department of Agriculture. (FE) (Senate: Decision of the Chair stands as the judgment of the Senate)
Passed · 18-15
Yea
AB130 · 2026-03-17
Exempting certain persons from PFAS enforcement actions under the spills law. (FE) (Senate: Read a third time and concurred in)
Passed · 33-0
Yea
SB179 · 2026-03-17
Applying the motor vehicle fuel tax supplier’s administrative allowance to diesel fuel, a motor vehicle fuel tax refund for evaporation losses, and making an appropriation. (FE) (Senate: Assembly Substitute Amendment 1 nonconcurred in)
Passed · 33-0
Yea
AB700 · 2026-03-17
An appropriation for refundable long-term care insurance assessment credits and making an appropriation. (FE) (Senate: Read a third time and concurred in)
Passed · 30-3
Yea
AB676 · 2026-03-17
Creating a tax credit for insurers for certain investments in community development entities. (FE) (Senate: Read a third time and concurred in)
Passed · 32-1
Yea
AB913 · 2026-03-17
Subtraction for certain income of members of the National Guard and Reserves. (FE) (Senate: Read a third time and concurred in)
Passed · 33-0
Yea
AB182 · 2026-03-17
Changes to the low-income housing tax credit. (FE) (Senate: Senate Amendment 1 rejected)
Passed · 18-15
Yea
AB182 · 2026-03-17
Changes to the low-income housing tax credit. (FE) (Senate: Read a third time and concurred in)
Passed · 30-3
Yea
AB650 · 2026-03-17
Funding for identity verification under the unemployment insurance law and making an appropriation. (FE) (Senate: Read a third time and concurred in)
Passed · 33-0
Yea
AB759 · 2026-03-17
Eligibility to receive occupational credentials for recipients of deferred action under the Deferred Action for Childhood Arrivals program. (FE) (Senate: Read a third time and concurred in)
Passed · 31-2
Yea
SJR116 · 2026-03-17
Prohibiting the governor from using the partial veto to create or increase any tax or fee (second consideration). (Senate: Assembly Substitute Amendment 3 concurred in)
Passed · 18-15
Yea
SB480 · 2026-03-17
Residential tax incremental districts. (FE) (Senate: Assembly Amendment 1 concurred in)
Passed · 32-1
Yea
SR7 · 2026-03-17
Convening additional senate floor periods to address affordability for Wisconsin. (Senate: Refused to suspend rules to withdraw from committee on Senate Organization)
Failed · 15-18
Nay
AB911 · 2026-03-17
Funding for a battery collection and recycling program and making an appropriation. (FE) (Senate: Read a third time and concurred in)
Passed · 33-0
Yea
SB248 · 2026-03-17
License eligibility and restriction extensions relating to ignition interlock devices. (Senate: Assembly Substitute Amendment 1 concurred in)
Passed · 33-0
Yea
SB176 · 2026-03-17
An income and franchise tax exemption for broadband expansion grants and for federal high-cost program funding for broadband expansion. (FE) (Senate: Assembly Substitute Amendment 1 concurred in)
Passed · 20-13
Yea
SB799 · 2026-03-17
Parental access to health records of minors. (Senate: Decision of the Chair stands as the judgment of the Senate)
Passed · 18-15 · 4 roll calls that day, voted the same way on each
Yea
SJR142 · 2026-03-17
Recognizing the life and extraordinary leadership of Bob Harlan. (Senate: Adopted)
Passed · 33-0
Yea
SB225 · 2026-03-17
Regulation of amusement rides located at campgrounds. (FE) (Senate: Assembly Substitute Amendment 1 concurred in)
Passed · 33-0
Yea
AB757 · 2026-03-17
The appointment of certain employees of the University of Wisconsin System and faculty governance. (Senate: Senate Substitute Amendment 1 rejected)
Passed · 18-15
Yea
AB248 · 2026-03-17
Vacancies in appointive state offices. (Senate: Decision of the Chair stands as the judgment of the Senate)
Passed · 18-15
Yea
AB248 · 2026-03-17
Vacancies in appointive state offices. (Senate: Read a third time and concurred in)
Passed · 17-16
Yea
AB180 · 2026-03-17
Requiring the Department of Health Services to seek any necessary waiver to prohibit the purchase of candy or soft drinks with FoodShare benefits. (FE) (Senate: Senate Substitute Amendment 2 rejected)
Passed · 18-15
Yea
AB180 · 2026-03-17
Requiring the Department of Health Services to seek any necessary waiver to prohibit the purchase of candy or soft drinks with FoodShare benefits. (FE) (Senate: Read a third time and concurred in)
Passed · 25-8
Yea
AB685 · 2026-03-17
Individual income tax subtraction for certain theft losses. (FE) (Senate: Read a third time and concurred in)
Passed · 33-0
Yea
AB604 · 2026-03-17
Coverage under the Medical Assistance program for incarcerated individuals. (FE) (Senate: Read a third time and concurred in)
Passed · 32-1
Yea
AB657 · 2026-03-17
A sales and use tax exemption for nuclear fusion technology projects. (FE) (Senate: Read a third time and concurred in)
Passed · 30-3
Yea
AB1034 · 2026-03-17
Name, image, and likeness rights for University of Wisconsin System student athletes; maintenance costs for University of Wisconsin–Madison intercollegiate athletic facilities; and making an appropriation. (FE) (Senate: Read a third time and concurred in)
Passed · 17-16
Yea
AB884 · 2026-03-17
Who may purchase certain contractual services and technical changes to tax provisions related to qualified retirement plans and the film production services credit. (Senate: Read a third time and concurred in)
Passed · 33-0
Yea
AB957 · 2026-03-17
Internet crimes against children law enforcement and making an appropriation. (FE) (Senate: Read a third time and concurred in)
Passed · 33-0
Yea
AB1032 · 2026-03-17
The sale of property under Department of Natural Resources jurisdiction to prevent the spread of avian flu. (Senate: Decision of the Chair stands as the judgment of the Senate)
Passed · 18-15
Yea
AB549 · 2026-02-18
Manufactured home sales and certificates of title and modifying administrative rules of the Department of Safety and Professional Services related to manufactured home purchase contracts. (FE) (Senate: Decision of the Chair stands as the judgment of the Senate)
Passed · 18-15
Yea
SB522 · 2026-02-18
The appointment of a guardian ad litem in a proceeding to grant reasonable visitation rights to a nonparent. (FE) (Senate: Read a third time and passed)
Passed · 32-1
Yea
SB287 · 2026-02-18
The employment eligibility verification program and granting rule-making authority. (FE) (Senate: Read a third time and passed)
Passed · 18-15
Yea
Complete voting record from LegiScan (showing the 60 most recent of 271 total roll-call votes this session).
Voting data provided by LegiScan, licensed under CC BY 4.0.
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