# Zach Dieken

Zach Dieken is a Republican member of the Iowa House for district 5.

- Party: Republican
- Seat: Iowa House, district 5
- Serving since: 2023-01-01
- Current term: IA 2025–26 session
- Open States ID: ocd-person/ef26d757-2882-4047-a82e-0682cc638d05

Source: https://americaspoliticalpulse.com/p/ef26d757-2882-4047-a82e-0682cc638d05 (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

Dieken reported $96 in the 2026 cycle, in the bottom 5% of State House Republicans (median $33.7K).

## Ideology (CSIP)

CSIP score +0.38 (standard error 0.03), from 74 donors and 441 roll calls. Negative is left of 0, positive right of it, on one scale for every official. 55% of State House Republicans score lower.

## Votes (IA 2025–26 session)

822 roll calls. Attendance 66% (Iowa House 91.8%). Party unity 96.3% (96.0%). 24 votes against the party majority.

Key votes:

- 2026-10-02 · voted not voting · Shall the bill pass? · HF 2801 A bill for an act modifying the major economic growth attraction program, and including effective date provisions. · pass · https://openstates.org/ia/bills/2025-2026/HF2801/
- 2026-05-02 · voted not voting · Shall amendment H-8456 be adopted? · SF 639 A bill for an act creating a specialty business court, and including effective date provisions. · fail · https://openstates.org/ia/bills/2025-2026/SF639/
- 2026-05-02 · voted not voting · Shall amendment H-8451, to amendment H-8414, be adopted? · HF 2770 A bill for an act relating to and making appropriations to the justice system, providing fees, and including applicability provisions. · pass · https://openstates.org/ia/bills/2025-2026/HF2770/
- 2026-05-02 · voted not voting · Shall the bill pass? · SF 2480 A bill for an act relating to the taxation and regulation of alternative nicotine products and vapor products, making appropriations, and including… · pass · https://openstates.org/ia/bills/2025-2026/SF2480/
- 2026-05-02 · voted not voting · Shall the bill pass? · SF 2465 A bill for an act relating to agriculture, including by providing for the powers and duties of the department of agriculture and land stewardship,… · pass · https://openstates.org/ia/bills/2025-2026/SF2465/
- 2026-05-02 · voted not voting · Shall amendment H-8416, to amendment H-8414, be adopted? · HF 2770 A bill for an act relating to and making appropriations to the justice system, providing fees, and including applicability provisions. · fail · https://openstates.org/ia/bills/2025-2026/HF2770/
- 2026-05-02 · voted not voting · Shall amendment H-8417, to amendment H-8414, be adopted? · HF 2770 A bill for an act relating to and making appropriations to the justice system, providing fees, and including applicability provisions. · fail · https://openstates.org/ia/bills/2025-2026/HF2770/
- 2026-05-02 · voted not voting · Shall the bill pass? · HF 2794 A bill for an act establishing a sexual assault forensic examination center grant program and trust fund. · pass · https://openstates.org/ia/bills/2025-2026/HF2794/
- 2026-05-02 · voted not voting · Shall the bill pass? · HF 2797 A bill for an act relating to the peace officer, public safety, and emergency personnel bill of rights, and providing fees. · pass · https://openstates.org/ia/bills/2025-2026/HF2797/
- 2026-05-02 · voted not voting · Shall the bill pass? · HF 2617 A bill for an act relating to abandoned vehicles. · pass · https://openstates.org/ia/bills/2025-2026/HF2617/

## Legislation (IA 2025–26 session)

Sponsored 34 bills: 34 reached committee, 1 passed one chamber, 0 passed both, 0 became law. Cosponsored 0. 2.9% of sponsored bills got out of committee (Iowa House 13.4%; rank 96 of 98).

Recent sponsored bills:

- HF 2395: A bill for an act relating to the use of fluoride-based additives in private and public water supply systems. (in committee, 2026-02-11) https://openstates.org/ia/bills/2025-2026/HF2395/
- HF 2398: A bill for an act relating to the authorized possession of firearms on school property, including for certain drivers of school vehicles, firearms locked in… (in committee, 2026-02-11) https://openstates.org/ia/bills/2025-2026/HF2398/
- HF 2379: A bill for an act allowing the carrying of weapons on the grounds of a school under certain circumstances. (in committee, 2026-02-10) https://openstates.org/ia/bills/2025-2026/HF2379/
- HF 2316: A bill for an act relating to the treatment of an unborn child for the purposes of damages for wrongful death, homicide and related crimes, and assault,… (in committee, 2026-02-06) https://openstates.org/ia/bills/2025-2026/HF2316/
- HF 2209: A bill for an act providing for the admission of students to the Iowa state university of science and technology college of veterinary medicine. (in committee, 2026-04-01) https://openstates.org/ia/bills/2025-2026/HF2209/
- HF 2192: A bill for an act relating to bond election requirements and limitations applicable to school districts. (in committee, 2026-01-28) https://openstates.org/ia/bills/2025-2026/HF2192/
- HF 2171: A bill for an act striking elementary and secondary student immunization requirements. (in committee, 2026-02-04) https://openstates.org/ia/bills/2025-2026/HF2171/
- HF 2168: A bill for an act creating a state remittance tax and including applicability provisions. (in committee, 2026-01-27) https://openstates.org/ia/bills/2025-2026/HF2168/
- HF 2166: A bill for an act relating to voter records created and retained by the state commissioner of elections. (in committee, 2026-01-26) https://openstates.org/ia/bills/2025-2026/HF2166/
- HF 2165: A bill for an act relating to the casting of ballots by absent voters. (in committee, 2026-01-26) https://openstates.org/ia/bills/2025-2026/HF2165/

## Campaign money (2026 cycle)

Itemized receipts $96 (State House Republicans median $33.7K). 100% of itemized individual money came from in state. Aggregates only; no individual donors.

## Links

- Official site: https://www.legis.iowa.gov/legislators/legislator?ga=90&personID=33965
- Facebook: https://www.facebook.com/zachforhouse/

Full profile, with every chart and the methods: https://americaspoliticalpulse.com/p/ef26d757-2882-4047-a82e-0682cc638d05