# Don Mayhew

Don Mayhew is a Republican member of the Missouri House for district 124.

- Party: Republican
- Seat: Missouri House, district 124
- Serving since: 2023-01-04
- Current term: MO 2025–26 session
- Open States ID: ocd-person/af64f0a2-f3ff-4c6d-b24f-62c3941d1da4

Source: https://americaspoliticalpulse.com/p/af64f0a2-f3ff-4c6d-b24f-62c3941d1da4 (America’s Political Pulse, Polarization Research Lab), data through 2026-10-27. Data under CC BY 4.0. Cite as: Westwood, Sean J., and Yphtach Lelkes. 2024. America's Political Pulse [data set].

## Headline

Mayhew has served since 2023.

## Ideology (CSIP)

CSIP score +0.44 (standard error 0.06), from 55 donors and 0 roll calls. Negative is left of 0, positive right of it, on one scale for every official. 66% of State House Republicans score lower.

## Legislation (MO 2025–26 session)

Sponsored 54 bills: 54 reached committee, 2 passed one chamber, 1 passed both, 0 became law. Cosponsored 1. 31.5% of sponsored bills got out of committee (Missouri House 32.2%; rank 81 of 150).

Recent sponsored bills:

- HB 3538: Establishes the "Motor Fuel Tax Fund of 2021" (in committee, 2026-05-15) https://openstates.org/mo/bills/2026/HB3538/
- HB 3539: Modifies provisions relating to motor fuel tax exemption (in committee, 2026-05-15) https://openstates.org/mo/bills/2026/HB3539/
- HB 3531: Requires the Missouri state highway patrol to host a website where the public can determine whether a serial number of a firearm has been reported stolen (in committee, 2026-05-15) https://openstates.org/mo/bills/2026/HB3531/
- HB 3491: Modifies commercial drivers' license requirements for foreign applicants (in committee, 2026-03-12) https://openstates.org/mo/bills/2026/HB3491/
- HB 3393: Establishes the "Megan Meier Act" (in committee, 2026-04-02) https://openstates.org/mo/bills/2026/HB3393/
- HB 3370: Modifies provisions relating to court-ordered treatment (in committee, 2026-05-15) https://openstates.org/mo/bills/2026/HB3370/
- HB 3326: Provides immunity from civil liability for disclosures by a charitable organization of allegations of sexual misconduct (in committee, 2026-05-15) https://openstates.org/mo/bills/2026/HB3326/
- HB 3294: Authorizes an income tax subtraction for all military income (in committee, 2026-05-05) https://openstates.org/mo/bills/2026/HB3294/
- HCR 39: Urges the states to compel Congress to propose an amendment to repeal the Sixteenth Amendment of the United States Constitution and return taxation authority… (in committee, 2026-05-15) https://openstates.org/mo/bills/2026/HCR39/
- HJR 178: Creates new requirements for the general assembly when regulating local governments (in committee, 2026-05-15) https://openstates.org/mo/bills/2026/HJR178/

## Campaign money (2026 cycle)

Itemized receipts $53.9K (State House Republicans median $33.7K). 91% of itemized individual money came from in state. Aggregates only; no individual donors.

## Links

- Official site: https://house.mo.gov/MemberDetails.aspx?year=2024&code=R&district=124
- Campaign site: https://www.mayhewformissouri.com/
- X: https://x.com/DonMayhewMO
- Facebook: https://www.facebook.com/DonMayhewMO/

Full profile, with every chart and the methods: https://americaspoliticalpulse.com/p/af64f0a2-f3ff-4c6d-b24f-62c3941d1da4