# Mark Lapka

Mark Lapka is a Republican member of the South Dakota Senate for district 23.

- Party: Republican
- Seat: South Dakota Senate, district 23
- Serving since: 2025-01-14
- Current term: SD 2025–26 session
- Open States ID: ocd-person/04b57e8f-1cbe-4637-84a5-6b2257413d18

Source: https://americaspoliticalpulse.com/p/04b57e8f-1cbe-4637-84a5-6b2257413d18 (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 the 15 bills Lapka sponsored got out of committee, the highest of 34 in the South Dakota Senate.

## Ideology (CSIP)

CSIP score −0.10 (standard error 0.01), from 36 donors and 324 roll calls. Negative is left of 0, positive right of it, on one scale for every official. 3.3% of State Senate Republicans score lower.

## Votes (SD 2025–26 session)

658 roll calls. Attendance 93.9% (South Dakota Senate 96.6%). Party unity 93.1% (76%). 75 votes against the party majority.

Key votes:

- 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/
- 2026-03-12 · 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 Amended · SB 78 revise the General Appropriations Act for fiscal year 2026. · pass · https://openstates.org/sd/bills/2026/SB78/
- 2026-03-11 · voted yea · Do Pass Amended · SB 78 revise the General Appropriations Act for fiscal year 2026. · pass · https://openstates.org/sd/bills/2026/SB78/
- 2026-03-11 · 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/
- 2026-03-11 · 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 · HB 1006 create a taskforce to study the creation of Indian medicaid managed care entities in the state. · pass · https://openstates.org/sd/bills/2026/HB1006/
- 2026-03-09 · voted yea · Do Pass Amended · HB 1241 modify the requirements for public notice of a hearing prior to a vote to impose an excess tax levy, and to modify requirements to refer an excess tax… · fail · https://openstates.org/sd/bills/2026/HB1241/
- 2026-03-09 · voted yea · Do Pass · HB 1140 permit a court to impose as a condition of probation, or parole in certain circumstances, treatment at a nonprofit entity awarded an alternative care… · pass · https://openstates.org/sd/bills/2026/HB1140/
- 2026-03-09 · voted nay · Do Pass · HB 1160 repeal the medical marijuana oversight committee. · fail · https://openstates.org/sd/bills/2026/HB1160/

## Legislation (SD 2025–26 session)

Sponsored 15 bills: 15 reached committee, 11 passed one chamber, 8 passed both, 7 became law. Cosponsored 0. 100.0% of sponsored bills got out of committee (South Dakota Senate 78.2%; rank 1 of 34).

Recent sponsored bills:

- SJR 508: proposing and submitting to the voters at the next general election, amendments to the Constitution of the State of South Dakota, removing the lieutenant… (passed one chamber, 2026-03-04) https://openstates.org/sd/bills/2026/SJR508/
- 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/
- SB 225: apportion interest earnings from the unclaimed property trust fund to school districts. (in committee, 2026-02-23) https://openstates.org/sd/bills/2026/SB225/
- SB 199: establish a new fund to provide property tax relief. (in committee, 2026-02-23) https://openstates.org/sd/bills/2026/SB199/
- SB 135: protect residents from increased utility costs and utility shortages caused by data centers and clarify authority to regulate data centers. (became law, 2026-03-30) https://openstates.org/sd/bills/2026/SB135/
- SB 124: temporarily prohibit the manufacture, sale, and distribution of any product containing cell-cultured protein, and to provide a penalty therefor. (became law, 2026-03-12) https://openstates.org/sd/bills/2026/SB124/
- SB 88: clarify the procedure for a potential condemnor to examine real property absent the property owner's permission. (became law, 2026-03-12) https://openstates.org/sd/bills/2026/SB88/
- HB 1064: provide for the sale of producer-raised meat and meat food products directly to consumers pending legalization under federal law. (became law, 2026-02-17) https://openstates.org/sd/bills/2026/HB1064/
- HB 1076: revise restrictions on residence within a community safety zone and to declare an emergency. (became law, 2026-02-17) https://openstates.org/sd/bills/2026/HB1076/
- HJR 5001: proposing and submitting to the voters at the next general election an amendment to the Constitution of the State of South Dakota, requiring a declaration of… (passed one chamber, 2026-03-02) https://openstates.org/sd/bills/2026/HJR5001/

## Campaign money (2024 cycle)

Itemized receipts $26.8K (State Senate Republicans median $28.3K). 85% of itemized individual money came from in state. Aggregates only; no individual donors.

## Links

- Official site: https://sdlegislature.gov/Legislators/Profile/4696/Detail
- Facebook: https://www.facebook.com/p/Mark-Lapka-for-District-23-Senate-61558105176688/

Full profile, with every chart and the methods: https://americaspoliticalpulse.com/p/04b57e8f-1cbe-4637-84a5-6b2257413d18