# Mike Henderson

Mike Henderson is a Republican member of the Missouri Senate for district 3.

- Party: Republican
- Seat: Missouri Senate, district 3
- Serving since: 2017-01-11
- Current term: MO 2025–26 session
- Open States ID: ocd-person/bfad4ef7-fad2-46e6-8f12-f8ea9feaa0cb

Source: https://americaspoliticalpulse.com/p/bfad4ef7-fad2-46e6-8f12-f8ea9feaa0cb (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

100% of Henderson’s itemized money in the 2026 cycle came from Missouri, in the top quarter of State Senate Republicans.

## What Henderson says (MO 2025–26 session)

136 classified statements: 136 posts on X. Each rate is the share of statements with the label, against the State Senate Republicans average; rank 1 is the highest rate.

| Label | Henderson | State Senate Republicans average | Rank |
|---|---|---|---|
| Personal attacks | 7.3% | 2.3% | 36 of 354 |
| Policy criticism | 0.7% | 9.5% | 294 of 354 |
| Policy discussion | 1.5% | 37.3% | 347 of 354 |
| Bipartisanship | 0.0% | 2.3% | 311 of 354 |
| Credit claiming | 0.0% | 15.4% | 342 of 354 |
| Extreme labels | 0.0% | 1.3% | 261 of 354 |

Most discussed policy areas: Education 100% (State Senate Republicans 14%); Agriculture and Food 0% (State Senate Republicans 6.2%); Armed Forces and National Security 0% (State Senate Republicans 6.5%); Civil Rights and Liberties, Minority Issues 0% (State Senate Republicans 5.0%); Commerce 0% (State Senate Republicans 4.5%).

## Ideology (CSIP)

CSIP score +0.58 (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. 81% of State Senate Republicans score lower.

## Legislation (MO 2025–26 session)

Sponsored 65 bills: 65 reached committee, 8 passed one chamber, 8 passed both, 4 became law. Cosponsored 0. 12.3% of sponsored bills got out of committee (Missouri Senate 11.0%; rank 8 of 33).

Recent sponsored bills:

- SB 1779: Modifies cost of living adjustments for members of the Public School Retirement System and the Public Education Employee Retirement System (in committee, 2026-05-07) https://openstates.org/mo/bills/2026/SB1779/
- SB 1730: Modifies provisions relating to the Missouri Technology Corporation (in committee, 2026-05-07) https://openstates.org/mo/bills/2026/SB1730/
- SB 1729: Establishes provisions relating to college and career readiness assessments (in committee, 2026-05-07) https://openstates.org/mo/bills/2026/SB1729/
- SB 1700: Requires school districts and charter schools to install master key boxes at public schools and charter schools on or before July 1, 2028 (in committee, 2026-05-07) https://openstates.org/mo/bills/2026/SB1700/
- SB 1646: Modifies provisions relating to the use of certain tourism tax revenues (in committee, 2026-04-15) https://openstates.org/mo/bills/2026/SB1646/
- SB 1605: Makes 7-hydroxymitragynine in certain amounts a Schedule I controlled substance (in committee, 2026-05-15) https://openstates.org/mo/bills/2026/SB1605/
- SB 1572: Modifies provisions relating to public employee retirement systems (became law, 2026-07-09) https://openstates.org/mo/bills/2026/SB1572/
- SB 1557: Modifies provisions relating to retirement, including Tier 2011 and deferred compensation (in committee, 2026-03-09) https://openstates.org/mo/bills/2026/SB1557/
- SB 1558: Provides that private schools shall not be civilly liable for establishing single-sex restrooms and changing rooms (in committee, 2026-03-31) https://openstates.org/mo/bills/2026/SB1558/
- SB 1559: Modifies provisions relating to deferred compensation for state employees (in committee, 2026-02-05) https://openstates.org/mo/bills/2026/SB1559/

## Campaign money (2026 cycle)

Itemized receipts $75.1K (State Senate Republicans median $46.2K). 100% of itemized individual money came from in state. Aggregates only; no individual donors.

## Recent statements

Newest first. Posts on X are listed by date and link only.

- 2026-10-18 · Post on X · https://x.com/MikeHenderso12/status/2111953132955537678
- 2026-10-18 · Post on X · https://x.com/MikeHenderso12/status/2111953821564117341
- 2026-10-12 · Post on X · labels: personal attacks · https://x.com/MikeHenderso12/status/2109437953961533842
- 2026-10-11 · Post on X · https://x.com/MikeHenderso12/status/2109126893546959158
- 2026-10-04 · Post on X · https://x.com/MikeHenderso12/status/2106579054535266635
- 2026-10-04 · Post on X · https://x.com/MikeHenderso12/status/2106579302410326499
- 2026-10-04 · Post on X · https://x.com/MikeHenderso12/status/2106580399501832460
- 2026-10-04 · Post on X · https://x.com/MikeHenderso12/status/2106893664924664039
- 2026-09-28 · Post on X · https://x.com/MikeHenderso12/status/2104553330731331648
- 2026-09-27 · Post on X · https://x.com/MikeHenderso12/status/2104015572610724219

## Links

- Official site: https://house.mo.gov/MemberDetails.aspx?year=2024&code=R&district=117
- X: https://x.com/MikeHenderso12
- Facebook: https://www.facebook.com/MikeHendersonMO/?_rdr

Full profile, with every chart and the methods: https://americaspoliticalpulse.com/p/bfad4ef7-fad2-46e6-8f12-f8ea9feaa0cb