# Marty Overweg

Marty Overweg is a Republican member of the South Dakota House for district 21.

- Party: Republican
- Seat: South Dakota House, district 21
- Serving since: 2023-01-10
- Current term: SD 2025–26 session
- Open States ID: ocd-person/7dc4b8d9-148b-4622-a6de-b27dc27030be

Source: https://americaspoliticalpulse.com/p/7dc4b8d9-148b-4622-a6de-b27dc27030be (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

Overweg sits at −0.10 on the CSIP scale, more liberal than 97% of State House Republicans.

## Ideology (CSIP)

CSIP score −0.10 (standard error 0.01), from 19 donors and 1,056 roll calls. Negative is left of 0, positive right of it, on one scale for every official. 2.7% of State House Republicans score lower.

## Votes (SD 2025–26 session)

638 roll calls. Attendance 100% (South Dakota House 96.6%). Party unity 89% (76%). 123 votes against the party majority.

Key votes:

- 2026-03-12 · voted yea · Do Pass Amended · SB 78 revise the General Appropriations Act for fiscal year 2026. · pass · https://openstates.org/sd/bills/2026/SB78/
- 2026-03-12 · voted yea · Do Pass Amended · HB 1051 revise property tax levies for school districts and to revise the state aid to general and special education formulas. · pass · https://openstates.org/sd/bills/2026/HB1051/
- 2026-03-12 · voted yea · Do Pass · HB 1326 appropriate money for the ordinary expenses of the legislative, judicial, and executive departments of the state, the current expenses of state… · pass · https://openstates.org/sd/bills/2026/HB1326/
- 2026-03-09 · voted yea · Do Pass Amended · SB 219 require that a state agency consult with the Aeronautics Commission prior to purchasing, transferring, or disposing of a state owned and operated… · pass · https://openstates.org/sd/bills/2026/SB219/
- 2026-03-09 · voted yea · Do Pass Amended · SB 245 create the homeowner property tax reduction fund, and to transfer moneys to the homeowner property tax reduction fund. · pass · https://openstates.org/sd/bills/2026/SB245/
- 2026-03-09 · voted nay · Do Pass Amended · SB 221 regulate the retail sale of nicotine products, and to provide a penalty therefor. · pass · https://openstates.org/sd/bills/2026/SB221/
- 2026-03-09 · voted yea · Do Pass Amended · SB 222 make an appropriation for eligible water, wastewater, storm water, and riparian buffer initiative projects and to declare an emergency. · pass · https://openstates.org/sd/bills/2026/SB222/
- 2026-03-09 · voted yea · Do Pass Amended · SB 119 create the capitol restoration fund and to transfer moneys thereto. · pass · https://openstates.org/sd/bills/2026/SB119/
- 2026-03-09 · voted yea · Do Pass Amended · SB 106 modify the amount required to be set aside for extraordinary expenses incurred in providing special education programs. · pass · https://openstates.org/sd/bills/2026/SB106/
- 2026-03-09 · voted yea · Do Pass Amended · SB 102 modify the distribution of gaming revenues. · pass · https://openstates.org/sd/bills/2026/SB102/

## Legislation (SD 2025–26 session)

Sponsored 50 bills: 48 reached committee, 36 passed one chamber, 30 passed both, 27 became law. Cosponsored 0. 90.0% of sponsored bills got out of committee (South Dakota House 81.4%; rank 17 of 69).

Recent sponsored bills:

- SB 237: require that counties provide written notice to township supervisors of conditional use applications and appeals. (became law, 2026-03-12) https://openstates.org/sd/bills/2026/SB237/
- SB 236: create the county and township infrastructure fund for the accounting, safekeeping, and allocation of unobligated rural access infrastructure fund moneys. (became law, 2026-03-10) https://openstates.org/sd/bills/2026/SB236/
- HB 1138: require the licensure of non-medical home care agencies, and to provide a penalty therefor. (passed both chambers, 2026-03-30) https://openstates.org/sd/bills/2026/HB1138/
- HC 8008: honoring Ashlyn Koupal of Wagner for being named to the 2026 McDonald's All-American Girls Basketball Team. (introduced, 2026-02-10) https://openstates.org/sd/bills/2026/HC8008/
- HB 1264: eliminate the Agricultural Land Assessment Implementation and Oversight Advisory Task Force, and to provide that the Department of Revenue receive the… (became law, 2026-03-30) https://openstates.org/sd/bills/2026/HB1264/
- HB 1286: amend the process by which moneys are distributed from the employer's investment in South Dakota's future fund. (became law, 2026-03-10) https://openstates.org/sd/bills/2026/HB1286/
- HB 1222: prohibit members of the Board of Economic Development from having any interest in moneys from or approved by the Board of Economic Development. (in committee, 2026-02-19) https://openstates.org/sd/bills/2026/HB1222/
- HB 1221: establish a post-employment restriction for employees of the Governor's Office of Economic Development and create a penalty therefor. (in committee, 2026-02-11) https://openstates.org/sd/bills/2026/HB1221/
- HB 1215: authorize counties and municipalities to issue a license for a cigar bar. (became law, 2026-03-30) https://openstates.org/sd/bills/2026/HB1215/
- HB 1230: modify requirements for payment of the employer's investment in South Dakota's future fee. (in committee, 2026-02-23) https://openstates.org/sd/bills/2026/HB1230/

## Campaign money (2024 cycle)

Itemized receipts $11.9K (State House Republicans median $10.7K). 94% of itemized individual money came from in state. Aggregates only; no individual donors.

## Links

- Official site: https://sdlegislature.gov/Legislators/Profile/4542/Detail
- X: https://x.com/MartyOverweg
- Facebook: https://www.facebook.com/marty.overweg
- Facebook: https://www.facebook.com/p/Marty-Overweg-for-South-Dakota-100069137083005/

Full profile, with every chart and the methods: https://americaspoliticalpulse.com/p/7dc4b8d9-148b-4622-a6de-b27dc27030be