South Dakota State Senate District 23
Tue, Nov 3 · Represented by Mark Lapka Republican · Member list as of Oct 28
Mark LapkaRepublican · Incumbent2 years since first win
One candidate on the printed ballot.
- Last election
- Mark Lapka (Republican) was unopposed, 2024
- Earlier results
- Bryan J. Breitling (Republican) was unopposed, 2022Bryan J. Breitling (Republican) won by 79.1 points, 2020, older linesAll 29 elections
Past results
- Votes for listed candidates
- 9,183
- Election day
- November 5, 2024
- District map
- Same as today
South Dakota Senate District 23, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share RepublicanMark LapkaWon Republican 9,183100.0% - Votes for listed candidates
- 7,954
- Election day
- November 8, 2022
- District map
- Same as today
South Dakota Senate District 23, 1968 to 2024, 2022, every candidate Candidate Party Votes and share Share RepublicanBryan J. BreitlingWon(incumbent) Republican 7,954100.0% - Votes for listed candidates
- 10,629
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 23, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanBryan J. BreitlingWon Republican 9,51989.6% OtherCj Abernathey Other 1,11010.4% - Votes for listed candidates
- 9,530
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 23, 1968 to 2024, 2018, every candidate Candidate Party Votes and share Share RepublicanJustin R. CroninWon(incumbent) Republican 7,86982.6% DemocraticJoe Yracheta Democratic 1,66117.4%
- 2024: MEDSL 2024 official precinct returns (individual_states zips), retrieved Oct 28, 2026. Compiled by MIT Election Data and Science Lab (MEDSL) from official returns; not an official source
- 1968 to 2022: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), retrieved Oct 28, 2026. Compiled by Carl Klarner (Harvard Dataverse) from official returns; not an official source
Last contest in this district on file: 2024.
All elections (29 for this seat)
- Votes for listed candidates
- 9,183
- Election day
- November 5, 2024
- District map
- Same as today
South Dakota Senate District 23, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share RepublicanMark LapkaWon Republican 9,183100.0% - Votes for listed candidates
- 7,954
- Election day
- November 8, 2022
- District map
- Same as today
South Dakota Senate District 23, 1968 to 2024, 2022, every candidate Candidate Party Votes and share Share RepublicanBryan J. BreitlingWon(incumbent) Republican 7,954100.0% - Votes for listed candidates
- 10,629
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 23, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanBryan J. BreitlingWon Republican 9,51989.6% OtherCj Abernathey Other 1,11010.4% - Votes for listed candidates
- 9,530
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 23, 1968 to 2024, 2018, every candidate Candidate Party Votes and share Share RepublicanJustin R. CroninWon(incumbent) Republican 7,86982.6% DemocraticJoe Yracheta Democratic 1,66117.4% - Votes for listed candidates
- 8,445
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 23, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanJustin R. CroninWon Republican 8,445100.0% - Votes for listed candidates
- 6,827
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 23, 1968 to 2024, 2014, every candidate Candidate Party Votes and share Share RepublicanCorey BrownWon(incumbent) Republican 6,827100.0% - Votes for listed candidates
- 8,029
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 23, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanCorey BrownWon(incumbent) Republican 8,029100.0% - Votes for listed candidates
- 6,455
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 23, 1968 to 2024, 2010, every candidate Candidate Party Votes and share Share RepublicanCorey BrownWon(incumbent) Republican 6,455100.0% - Votes for listed candidates
- 9,348
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 23, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share RepublicanCorey BrownWon Republican 5,98864.1% DemocraticNicholas Nemec Democratic 3,36035.9% - Votes for listed candidates
- 8,638
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 23, 1968 to 2024, 2006, every candidate Candidate Party Votes and share Share RepublicanJay L. DuenwaldWon(incumbent) Republican 6,58976.3% IndependentMerlyn Schutterle Independent 1,21314.0% IndependentWayne E. Schmidt Independent 8369.7% - Votes for listed candidates
- 7,123
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 23, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share RepublicanJay L. DuenwaldWon(incumbent) Republican 7,123100.0% - Votes for listed candidates
- 4,236
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 23, 1968 to 2024, 2002, every candidate Candidate Party Votes and share Share RepublicanJay L. DuenwaldWon Republican 4,236100.0% - Votes for listed candidates
- 7,627
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 23, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share RepublicanRobert DrakeWon(incumbent) Republican 7,627100.0% - Votes for listed candidates
- 8,153
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 23, 1968 to 2024, 1998, every candidate Candidate Party Votes and share Share RepublicanRobert DrakeWon(incumbent) Republican 7,31889.8% LibertarianKevin Lee Ackerman Libertarian 83510.2% - Votes for listed candidates
- 9,895
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 23, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share RepublicanRobert DrakeWon Republican 5,17152.3% DemocraticNicholas Nemec Democratic 4,72447.7% - Votes for listed candidates
- 10,025
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 23, 1968 to 2024, 1994, every candidate Candidate Party Votes and share Share RepublicanDarrell BenderWon(incumbent) Republican 6,90268.8% DemocraticRichard L. Barnes Democratic 3,12331.1% - Votes for listed candidates
- 9,924
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 23, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share RepublicanDarrell BenderWon Republican 5,82558.7% DemocraticNewell Krause Democratic 4,09941.3% - Votes for listed candidates
- 7,653
- Election day
- November 6, 1990
- District map
- Older district map (1984 to 1991)
South Dakota Senate District 23, 1968 to 2024, 1990, every candidate Candidate Party Votes and share Share DemocraticCharles E. FlowersWon(incumbent) Democratic 4,16454.4% RepublicanLyle B. Rowen Republican 3,48945.6% - Votes for listed candidates
- 8,902
- Election day
- November 8, 1988
- District map
- Older district map (1984 to 1991)
South Dakota Senate District 23, 1968 to 2024, 1988, every candidate Candidate Party Votes and share Share DemocraticCharles E. FlowersWon Democratic 4,48550.4% RepublicanLeland Kleinsasser(incumbent) Republican 4,41749.6% - Votes for listed candidates
- 8,640
- Election day
- November 4, 1986
- District map
- Older district map (1984 to 1991)
South Dakota Senate District 23, 1968 to 2024, 1986, every candidate Candidate Party Votes and share Share RepublicanLeland KleinsasserWon(incumbent) Republican 4,67154.1% DemocraticCurtis Johnson Democratic 3,96945.9% - Votes for listed candidates
- 9,204
- Election day
- November 6, 1984
- District map
- Older district map (1984 to 1991)
South Dakota Senate District 23, 1968 to 2024, 1984, every candidate Candidate Party Votes and share Share RepublicanLeland KleinsasserWon(incumbent) Republican 5,44559.2% DemocraticDonald E. Cook Democratic 3,75940.8% - Votes for listed candidates
- 3,274
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1983)
South Dakota Senate District 23, 1968 to 2024, 1982, every candidate Candidate Party Votes and share Share DemocraticThomas ShortbullWon Democratic 2,33971.4% RepublicanFrancis G. Whitebird Republican 93528.6% - Votes for listed candidates
- 7,337
- Election day
- November 4, 1980
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 23, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share RepublicanMarvis T. HogenWon(incumbent) Republican 3,99854.5% DemocraticWilliam Decker Democratic 3,33945.5% - Election day
- November 7, 1978
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 23, 1968 to 2024, 1978, every candidate Candidate Party Votes and share Share RepublicanMarvis T. HogenWon Republican —— - Votes for listed candidates
- 6,552
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 23, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share RepublicanClint RobertsWon(incumbent) Republican 4,25164.9% DemocraticLarry C. Kehn Democratic 2,30135.1% - Votes for listed candidates
- 6,220
- Election day
- November 4, 1974
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 23, 1968 to 2024, 1974, every candidate Candidate Party Votes and share Share RepublicanClint RobertsWon(incumbent) Republican 3,81061.3% DemocraticFred Ellis Democratic 2,41038.8% - Votes for listed candidates
- 7,197
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 23, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share RepublicanClint RobertsWon Republican 3,93054.6% DemocraticFred Ellis Democratic 3,26745.4% - Votes for listed candidates
- 6,859
- Election day
- November 3, 1970
- District map
- Older district map (1966 to 1971)
South Dakota Senate District 23, 1968 to 2024, 1970, every candidate Candidate Party Votes and share Share RepublicanG. Homer HardingWon Republican 4,17560.9% DemocraticHenry Hertel Democratic 2,68439.1% - Votes for listed candidates
- 7,384
- Election day
- November 5, 1968
- District map
- Older district map (1966 to 1971)
South Dakota Senate District 23, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share RepublicanCarl T. FischerWon(incumbent) Republican 4,94667.0% DemocraticDorothy Olofson Democratic 2,43833.0%
- 2024: MEDSL 2024 official precinct returns (individual_states zips), retrieved Oct 28, 2026. Compiled by MIT Election Data and Science Lab (MEDSL) from official returns; not an official source
More about this race
Uncontested
One candidate on the printed ballot.
Some names come from filing lists and may not be on the ballot.
Source: vip.sdsos.gov, dated Oct 28
District map
Select a shape for details. Arrow keys move between shapes.
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
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Official results for South Dakota
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Cite this page
Election Wrld. (2026). South Dakota State Senate District 23, election results 1968 to 2024. https://www.electionwrld.com/sd/senate/23. Retrieved October 31, 2026.
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Sources
Sources: Census TIGERweb Legislative MapServer (120th CDs layer 0, 119th CDs layer 4, 2026 SLD upper layer 1 and lower layer 2) (US Census Bureau, public domain), retrieved Oct 28, 2026; Open Civic Data division identifiers (census_autogenerated us_sldl/us_sldu and openstates state files); also (sld-recent.json): Open Civic Data division identifiers (country-us) (CC0 (repository); also (sld-recent.json): CC0 1.0), retrieved Oct 28, 2026; Open States people (current) CSVs (CC0-1.0 (Open States people data)), retrieved Oct 28, 2026, compiled by Open States volunteers and staff (rosters from state legislature sites) from official returns, not an official source; MEDSL 2024 official precinct returns (individual_states zips) (Not stated in the GitHub repository (an earlier label said "MIT (repo)", which the repository does not support). MEDSL's Harvard Dataverse records are CC0 1.0, but these GitHub files were not checksum-matched to the Dataverse files, so CC0 is not claimed for them.), retrieved Oct 28, 2026, compiled by MIT Election Data and Science Lab (MEDSL) from official returns, not an official source; State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse) (CC0 1.0), retrieved Oct 28, 2026, compiled by Carl Klarner (Harvard Dataverse) from official returns, not an official source.
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), MEDSL 2024 official precinct returnsData as of Oct 28, 2026