SD
South Dakota House District 18
Tue, Nov 3 · Represented by Julie Auch Republican, Mike Stevens Republican · Member list as of Oct 28
4 candidates on the printed ballot. Sorted by last name.
- Last election
- Mike Stevens (Republican) won by 3.9 points, 2024
- Seats
- 2 seats in this district
- On the 2026 ballot
- 4 candidates
More about this race
Candidates on the ballot
1 of 2 seats open
1 of 2 current holders are not on the candidate list.
2 seats in this district.
- Jarod HolcombDemocratic
- Karen SpringerDemocratic
- John R. MarquardtRepublican
- Mike StevensIncumbentRepublican
Some names come from filing lists and may not be on the ballot.
Source: vip.sdsos.gov, dated Oct 28
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List every House of Representatives district (37)
- State House District 1· Nick Fosness, Logan Manhart
- State House District 2· David Kull, John Sjaarda
- State House District 3· Al Novstrup, Brandei Schaefbauer
- State House District 4· Dylan Jordan, Kent Roe
- State House District 5· Josephine Garcia, Matt Roby
- State House District 6· Aaron Aylward, Tim Czmowski
- State House District 7· Roger DeGroot, Mellissa Heermann
- State House District 8· Tim Reisch, Tim Walburg
- State House District 9· Tesa Schwans, Bethany Soye
- State House District 10· Bobbi Andera, Erin Healy
- State House District 11· Brian Mulder, Keri Weems
- State House District 12· Amber Arlint, Greg Jamison
- State House District 13· John Hughes, Jack Kolbeck
- State House District 14· Tony Kayser, Taylor Rehfeldt
- State House District 15· Erik Muckey, Kadyn Wittman
- State House District 16· Karla Lems, John Shubeck
- State House District 17· Chris Kassin, William Shorma
- State House District 18· Julie Auch, Mike Stevens
- State House District 19· Jessica Bahmuller, Drew Peterson
- State House District 20· Jeff Bathke, Kaley Nolz
- State House District 21· Jim Halverson, Marty Overweg
- State House District 22· Kevin Van Diepen, Lana Greenfield
- State House District 23· Spencer Gosch, Scott Moore
- State House District 24· Will Mortenson, Mike Weisgram
- State House District 25· Jon Hansen, Les Heinemann
- State House District 26A· Eric Emery
- State House District 26B· Rebecca Reimer
- State House District 27· Liz May, Peri Pourier
- State House District 28A· Jana Hunt
- State House District 28B· Travis Ismay
- State House District 29· Terri Jorgenson, Kathy Rice
- State House District 30· Tim Goodwin, Trish Ladner
- State House District 31· Mary Fitzgerald, Scott Odenbach
- State House District 32· Steve Duffy, Nicole Uhre-Balk
- State House District 33· Phil Jensen, Curt Massie
- State House District 34· Heather Baxter, Mike Derby
- State House District 35· Tina Mulally, Tony Randolph
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Official results for South Dakota
History (29 elections for this seat)
- Votes for listed candidates
- 19,315
- Election day
- November 5, 2024
- Seats
- 2
- District map
- Older district map (2022 to 2024)
South Dakota House of Representatives District 18, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share RepublicanMike StevensWon Republican 6,87235.6% RepublicanJulie AuchWon Republican 6,11631.7% DemocraticPaul Harens Democratic 4,09421.2% DemocraticSarah Mechtenberg Democratic 2,23311.6% - Votes for listed candidates
- 16,296
- Election day
- November 8, 2022
- Seats
- 2
- District map
- Older district map (2022)
South Dakota House of Representatives District 18, 1968 to 2024, 2022, every candidate Candidate Party Votes and share Share RepublicanMike StevensWon(incumbent) Republican 5,22832.1% RepublicanJulie AuchWon Republican 4,66428.6% DemocraticRyan D. Cwach(incumbent) Democratic 4,50927.7% DemocraticJay Williams Democratic 1,89511.6% - Votes for listed candidates
- 11,887
- Election day
- November 3, 2020
- Seats
- 2
- District map
- Older district map (2012 to 2021)
South Dakota House of Representatives District 18, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanMike StevensWon Republican 6,77857.0% DemocraticRyan CwachWon(incumbent) Democratic 5,10943.0% - Votes for listed candidates
- 16,325
- Election day
- November 6, 2018
- Seats
- 2
- District map
- Older district map (2012 to 2021)
South Dakota House of Representatives District 18, 1968 to 2024, 2018, every candidate Candidate Party Votes and share Share DemocraticRyan CwachWon Democratic 4,55227.9% RepublicanJean M. HunhoffWon(incumbent) Republican 4,44427.2% RepublicanMax L. Farver Republican 3,78223.2% DemocraticTerry Crandall Democratic 3,54721.7% - Votes for listed candidates
- 16,986
- Election day
- November 8, 2016
- Seats
- 2
- District map
- Older district map (2012 to 2021)
South Dakota House of Representatives District 18, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanMike StevensWon(incumbent) Republican 6,29637.1% RepublicanJean M. HunhoffWon(incumbent) Republican 5,39331.8% DemocraticDavid Allen Democratic 3,04717.9% DemocraticPeter Rossiter Democratic 2,25013.3% - Votes for listed candidates
- 13,578
- Election day
- November 4, 2014
- Seats
- 2
- District map
- Older district map (2012 to 2021)
South Dakota House of Representatives District 18, 1968 to 2024, 2014, every candidate Candidate Party Votes and share Share RepublicanMike StevensWon(incumbent) Republican 4,60433.9% RepublicanJean HunhoffWon Republican 3,96629.2% DemocraticTerry Winter Democratic 2,67219.7% DemocraticJay Williams Democratic 2,33617.2% - Votes for listed candidates
- 17,771
- Election day
- November 6, 2012
- Seats
- 2
- District map
- Older district map (2012 to 2021)
South Dakota House of Representatives District 18, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share DemocraticBernie HunhoffWon(incumbent) Democratic 5,58931.4% RepublicanMike StevensWon Republican 4,65726.2% RepublicanThomas D. Stotz Republican 3,91822.1% DemocraticCharlie Gross Democratic 3,60720.3% - Votes for listed candidates
- 15,530
- Election day
- November 2, 2010
- Seats
- 2
- District map
- Older district map (2002 to 2011)
South Dakota House of Representatives District 18, 1968 to 2024, 2010, every candidate Candidate Party Votes and share Share RepublicanNick MoserWon(incumbent) Republican 5,14933.2% DemocraticBernie HunhoffWon(incumbent) Democratic 4,95731.9% RepublicanCharlotte Gilson Republican 2,74017.6% DemocraticJay Williams Democratic 2,68417.3% - Votes for listed candidates
- 17,715
- Election day
- November 4, 2008
- Seats
- 2
- District map
- Older district map (2002 to 2011)
South Dakota House of Representatives District 18, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share DemocraticBernie HunhoffWon Democratic 6,01434.0% RepublicanNick G. MoserWon Republican 5,00928.3% DemocraticGarry A. Moore(incumbent) Democratic 4,79527.1% RepublicanDaniel L. Rupiper Republican 1,89710.7% - Votes for listed candidates
- 14,312
- Election day
- November 7, 2006
- Seats
- 2
- District map
- Older district map (2002 to 2011)
South Dakota House of Representatives District 18, 1968 to 2024, 2006, every candidate Candidate Party Votes and share Share DemocraticGarry A. MooreWon Democratic 5,82740.7% RepublicanCharlotte GilsonWon Republican 3,48524.4% RepublicanWayne E. Pibal Republican 2,96520.7% DemocraticDavid B. Dickinson Democratic 2,03514.2% - Votes for listed candidates
- 12,859
- Election day
- November 2, 2004
- Seats
- 2
- District map
- Older district map (2002 to 2011)
South Dakota House of Representatives District 18, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share RepublicanMatthew MichelsWon(incumbent) Republican 6,86653.4% RepublicanJean HunhoffWon(incumbent) Republican 5,99346.6% - Votes for listed candidates
- 16,213
- Election day
- November 5, 2002
- Seats
- 2
- District map
- Older district map (2002 to 2011)
South Dakota House of Representatives District 18, 1968 to 2024, 2002, every candidate Candidate Party Votes and share Share RepublicanMatthew MichelsWon(incumbent) Republican 5,72435.3% RepublicanJean HunhoffWon(incumbent) Republican 4,69929.0% DemocraticScott R. Swier Democratic 4,23426.1% DemocraticJay T. Blankenfield Democratic 1,5569.6% - Votes for listed candidates
- 16,247
- Election day
- November 7, 2000
- Seats
- 2
- District map
- Older district map (1992 to 2001)
South Dakota House of Representatives District 18, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share RepublicanMatthew MichelsWon(incumbent) Republican 5,84336.0% RepublicanJean HunhoffWon Republican 4,27926.3% DemocraticAdam C. Healy Democratic 3,81323.5% DemocraticDominic Braune Democratic 2,31214.2% - Votes for listed candidates
- 14,509
- Election day
- November 3, 1998
- Seats
- 2
- District map
- Older district map (1992 to 2001)
South Dakota House of Representatives District 18, 1968 to 2024, 1998, every candidate Candidate Party Votes and share Share RepublicanDonald E. MunsonWon(incumbent) Republican 4,63031.9% RepublicanMatthew MichelsWon Republican 4,59131.6% DemocraticRod Nohr Democratic 2,94220.3% DemocraticJohn Robert Kabeiseman Democratic 2,34616.2% - Votes for listed candidates
- 16,515
- Election day
- November 5, 1996
- Seats
- 2
- District map
- Older district map (1992 to 2001)
South Dakota House of Representatives District 18, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share DemocraticGarry A. MooreWon(incumbent) Democratic 4,87029.5% RepublicanDonald E. MunsonWon(incumbent) Republican 4,50627.3% RepublicanMatthew Michels Republican 3,75322.7% DemocraticJacob Hoffner Democratic 3,38620.5% - Votes for listed candidates
- 11,627
- Election day
- November 8, 1994
- Seats
- 2
- District map
- Older district map (1992 to 2001)
South Dakota House of Representatives District 18, 1968 to 2024, 1994, every candidate Candidate Party Votes and share Share DemocraticGarry A. MooreWon(incumbent) Democratic 5,99451.5% RepublicanDonald E. MunsonWon(incumbent) Republican 5,63348.5% - Votes for listed candidates
- 17,585
- Election day
- November 3, 1992
- Seats
- 2
- District map
- Older district map (1992 to 2001)
South Dakota House of Representatives District 18, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share DemocraticGarry A. MooreWon(incumbent) Democratic 5,76832.8% RepublicanDonald E. MunsonWon Republican 4,49625.6% RepublicanThomas D. Stotz Republican 3,69521.0% DemocraticJohn D. Hazen Democratic 3,62620.6% - Votes for listed candidates
- 14,516
- Election day
- November 6, 1990
- Seats
- 2
- District map
- Older district map (1984 to 1991)
South Dakota House of Representatives District 18, 1968 to 2024, 1990, every candidate Candidate Party Votes and share Share RepublicanJ. E. PutnamWon(incumbent) Republican 4,24929.3% DemocraticFrank KloucekWon Democratic 4,00927.6% RepublicanRichard A. Wudel(incumbent) Republican 3,33623.0% DemocraticRuth B. Lindeman Democratic 2,92220.1% - Votes for listed candidates
- 14,512
- Election day
- November 8, 1988
- Seats
- 2
- District map
- Older district map (1984 to 1991)
South Dakota House of Representatives District 18, 1968 to 2024, 1988, every candidate Candidate Party Votes and share Share RepublicanRichard A. WudelWon Republican 4,92934.0% RepublicanJ. E. PutnamWon Republican 4,89733.7% DemocraticFrank Kloucek Democratic 4,68632.3% - Votes for listed candidates
- 17,646
- Election day
- November 4, 1986
- Seats
- 2
- District map
- Older district map (1984 to 1991)
South Dakota House of Representatives District 18, 1968 to 2024, 1986, every candidate Candidate Party Votes and share Share RepublicanGary BenderWon(incumbent) Republican 5,85333.2% RepublicanEdward VangerpenWon(incumbent) Republican 5,11829.0% DemocraticPaul Zeeb Democratic 3,37519.1% DemocraticFrank Kloucek Democratic 3,30018.7% - Votes for listed candidates
- 18,131
- Election day
- November 6, 1984
- Seats
- 2
- District map
- Older district map (1984 to 1991)
South Dakota House of Representatives District 18, 1968 to 2024, 1984, every candidate Candidate Party Votes and share Share RepublicanEdward VangerpenWon Republican 5,70831.5% RepublicanGary BenderWon Republican 5,62431.0% DemocraticClarence Tjeerdsma Democratic 3,96421.9% DemocraticGary D. Blue Democratic 2,83515.6% - Votes for listed candidates
- 19,039
- Election day
- November 2, 1982
- Seats
- 2
- District map
- Older district map (1982 to 1983)
South Dakota House of Representatives District 18, 1968 to 2024, 1982, every candidate Candidate Party Votes and share Share DemocraticJames A. BurgWon(incumbent) Democratic 5,44028.6% RepublicanMalcolm C. McKillopWon(incumbent) Republican 5,01226.3% RepublicanJohn V. Terveen(incumbent) Republican 4,47523.5% DemocraticDiana L. Alexander Democratic 4,11221.6% - Votes for listed candidates
- 17,108
- Election day
- November 4, 1980
- Seats
- 2
- District map
- Older district map (1972 to 1981)
South Dakota House of Representatives District 18, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share DemocraticJames A. BurgWon(incumbent) Democratic 5,29931.0% RepublicanHarold D. KochWon Republican 4,44025.9% RepublicanJacob H. Carlson Republican 4,43125.9% DemocraticW. B. Alarie Democratic 2,93817.2% - Votes for listed candidates
- 15,906
- Election day
- November 7, 1978
- Seats
- 2
- District map
- Older district map (1972 to 1981)
South Dakota House of Representatives District 18, 1968 to 2024, 1978, every candidate Candidate Party Votes and share Share DemocraticJames A. BurgWon(incumbent) Democratic 4,31827.1% RepublicanRonald K. MillerWon(incumbent) Republican 4,30727.1% RepublicanDale Newcomer Republican 3,88424.4% DemocraticLarry Frederickson Democratic 3,39721.4% - Votes for listed candidates
- 17,062
- Election day
- November 2, 1976
- Seats
- 2
- District map
- Older district map (1972 to 1981)
South Dakota House of Representatives District 18, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share RepublicanRonald K. MillerWon(incumbent) Republican 4,65527.3% DemocraticJames A. BurgWon(incumbent) Democratic 4,55026.7% DemocraticDonn Wright Democratic 3,97323.3% RepublicanJacob H. Carlson Republican 3,88422.8% - Votes for listed candidates
- 17,261
- Election day
- November 4, 1974
- Seats
- 2
- District map
- Older district map (1972 to 1981)
South Dakota House of Representatives District 18, 1968 to 2024, 1974, every candidate Candidate Party Votes and share Share RepublicanRonald K. MillerWon Republican 4,52426.2% DemocraticJames A. BurgWon Democratic 4,43125.7% DemocraticDonald W. Bickner Democratic 4,37425.3% RepublicanJacob H. Carlson Republican 3,93222.8% - Votes for listed candidates
- 18,627
- Election day
- November 7, 1972
- Seats
- 2
- District map
- Older district map (1972 to 1981)
South Dakota House of Representatives District 18, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share DemocraticPhilip TestermanWon(incumbent) Democratic 5,63330.2% DemocraticBurton AndersonWon(incumbent) Democratic 4,72425.4% RepublicanG. Marvin Powell Republican 4,19222.5% RepublicanOscar William Hagen Republican 4,07821.9% - Votes for listed candidates
- 49,576
- Election day
- November 3, 1970
- Seats
- 4
- District map
- Older district map (1966 to 1971)
South Dakota House of Representatives District 18, 1968 to 2024, 1970, every candidate Candidate Party Votes and share Share RepublicanJoseph BarnettWon(incumbent) Republican 7,51115.2% DemocraticBernie KopeckyWon(incumbent) Democratic 7,31314.8% RepublicanRoyal J. WoodWon(incumbent) Republican 7,00014.1% DemocraticDon YoungWon(incumbent) Democratic 6,51113.1% DemocraticJames W. Denholm Democratic 5,98512.1% DemocraticH. I. King Democratic 5,48011.1% RepublicanGeorge E. Tarver Republican 5,05610.2% RepublicanGerald C. Lust Republican 4,7209.5% - Votes for listed candidates
- 56,674
- Election day
- November 5, 1968
- Seats
- 4
- District map
- Older district map (1966 to 1971)
South Dakota House of Representatives District 18, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share RepublicanJoseph BarnettWon(incumbent) Republican 8,33514.7% RepublicanRoyal J. WoodWon(incumbent) Republican 7,79113.8% DemocraticBernie KopeckyWon Democratic 7,55113.3% DemocraticDon YoungWon(incumbent) Democratic 6,95712.3% DemocraticRobert L. Dell Democratic 6,87712.1% RepublicanJay C. Swisher(incumbent) Republican 6,62911.7% DemocraticMerrill D. Rix Democratic 6,45511.4% RepublicanJames K. Lust Republican 6,07910.7%
- 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.
2 seats.
Download and cite
Cite this page
Election Wrld. (2026). South Dakota House District 18, election results 1968 to 2024. https://www.electionwrld.com/sd/house/18. Retrieved October 30, 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.
District id: ocd-division/country:us/state:sd/sldl:18
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), DIME (ODC-BY)Data as of Oct 28, 2026