Mark Lapka
South Dakota State Senator, District 23 since 2024. Ran in 1 election in 2024, winning 1. Re-elected in 2026. Next on the ballot in 2028.
- In office
- 1 yr
- Since 2024
- Bills became law
- 7
- 15 sponsored, 2025–2026 session
- Votes missed
- 4.2%
- Chamber median 0.8%
- With party
- 93%
- On votes splitting the parties
- Next election
- 2028
- Nov 7, 2028
- Elections
- 2
- 2024–2026
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:51 PM ET
Committees
As of 2026-10.
- Appropriations
- Appropriations
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
Administrative Procedure · Became law Mar 2026
Administrative Procedure · Became law Mar 2026
Eminent Domain · Became law Mar 2026
Administrative Procedure · Became law Mar 2026
Crimes · Became law Feb 2026
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where Lapka sits in the South Dakota State Senate
Lapka is closer to the center than 24% of the chamber's Republicans.
Closest: Kevin Jensen, Joy Hohn, Sue Peterson
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:01 PM ET
With Lapka’s party
- Votes with the chamber's Republicans93%
Black tick: the average of Republicans in the South Dakota State Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Lapka’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.
| Date | Bill | Lapka | Rep. majority | Dem. majority | Result |
|---|---|---|---|---|---|
| Mar 9, 2026 | HB 1082: establish parameters for the reimbursement of school districts that provide free or… | No | Yes | Yes | Passed 20–14 |
| Mar 5, 2026 | HB 1245: authorize municipalities to establish a local funding mechanism for capital improvement… | No | Yes | Yes | Passed 19–15 |
| Mar 5, 2026 | HB 1138: require the licensure of non-medical home care agencies, and to provide a penalty therefor. | No | Yes | Yes | Passed 20–14 |
| Mar 4, 2026 | HB 1263: eliminate an exclusion from the definition of an agricultural equipment dealer. | No | Yes | No | Passed 28–6 |
| Mar 3, 2026 | HB 1313: require education in prenatal human growth and development. | Yes | Yes | No | Passed 31–3 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Lapka was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.
Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Elections
Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.
| Year | Race | Result | Margin | Seat | +/− |
|---|---|---|---|---|---|
| 2026 | South Dakota State Senate, District 23 | Won | — | R+63.3 | — |
| 2024 | South Dakota State Senate, District 23 | Won | — | R+63.3 | — |
Source: 99chambers results archive; 2026: South Dakota Secretary of State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Campaign money, 2025–26
- Raised
- $1.5K
- Spent
- $3.5K
- Cash
- $6.7K
Source: South Dakota Secretary of State filings through Oct 20, 2026Updated Nov 1, 2026, 2:15 AM ET
Campaign committees
Open committees can still raise and spend money.
| Lapka for 23 State | Active |
Source: South Dakota Secretary of State filings through Oct 20, 2026Updated Nov 1, 2026, 2:15 AM ET
Seats Lapka has held
- South Dakota State Senate, District 23 · since 2024
Source: 99chambers results archive
How we know Lapka
One person, matched across every source we use.
- Open States ocd-person/04b57e8f-1cbe-4637-84a5-6b2257413d18
- Wikidata Q134995457
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 1:51 PM ET