RepublicanIncumbent
Mark Lapka
- Experience
- State legislature
South Dakota › South Dakota State Senate · November 3, 2026 · Updated Oct 16, 2026
South Dakota Legislative District 23
Mark Lapka has no major-party opponent.
Mark Lapka has no major-party opponent.
The candidates
The district
Lean R+61: how much more Democratic or Republican than the nation it votes for president.
Presidential vote
Precinct results re-aggregated to the current district lines.
Who lives here
- Population
- 25,423
- People per km²
- 1
- Adults with a B.A.+
- 29%
- White, no degree
- 63%of adults
- White 85%
- Hispanic 2%
- Black 2%
- Asian 2%
- Other / multiracial 9%
American Community Survey 2020–2024, aggregated from census tracts.
Past results
Results in the same-numbered district; earlier elections may have used different lines.
2024
9,183 votes · Uncontested by the other party✓ Mark Lapka (R)100.0%
2024 President Vote in this district
9,368 two-party votes · R+63.3 · R+61.8 vs. the nation✓ Donald Trump (R)81.6%
Kamala Harris (D)18.4%
2022
7,954 votes · Uncontested by the other party✓ Bryan J Breitling (R)100.0%
2020 Earlier district lines
10,629 votes · Uncontested by the other party✓ Bryan J Breitling (R)89.6%
Cj Abernathey (—)10.4%
2020 President Vote in this district
13,675 two-party votes · R+58.2 · R+62.8 vs. the nation✓ Donald Trump (R)79.1%
Joe Biden (D)20.9%
2016 President Vote in this district
13,971 two-party votes · R+57.3 · R+59.5 vs. the nation✓ Donald Trump (R)78.7%
Hillary Clinton (D)21.3%