SD
South Dakota Senate District 12
Tue, Nov 3 · Represented by Arch Beal Republican · Member list as of Oct 28
Kari Shanard-KoendersRepublicanJoe ZweifelDemocratic
No published poll names both candidates.Last result · 2024 general (different candidates): Arch Beal (R) 55.7, Clay Hoffman (D) 44.3
- Last election
- Arch Beal (Republican) won by 11.4 points, 2024
- On the 2026 ballot
- 2 candidates
More about this race
Candidates on the ballot
Open seat
The current holder, Arch Beal, is not on the candidate list.
- Joe ZweifelDemocratic
- Kari Shanard-KoendersRepublican
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 Senate district (35)
- State Senate District 1· Michael Rohl
- State Senate District 2· Steve Kolbeck
- State Senate District 3· Carl Perry
- State Senate District 4· Stephanie Sauder
- State Senate District 5· Glen Vilhauer
- State Senate District 6· Ernie Otten
- State Senate District 7· Tim Reed
- State Senate District 8· Casey Crabtree
- State Senate District 9· Joy Hohn
- State Senate District 10· Liz Larson
- State Senate District 11· Chris Karr
- State Senate District 12· Arch Beal
- State Senate District 13· Sue Peterson
- State Senate District 14· Larry Zikmund
- State Senate District 15· Jamie Smith
- State Senate District 16· Kevin Jensen
- State Senate District 17· Sydney Davis
- State Senate District 18· Lauren Nelson
- State Senate District 19· Kyle Schoenfish
- State Senate District 20· Paul Miskimins
- State Senate District 21· MyKala Voita
- State Senate District 22· Brandon Wipf
- State Senate District 23· Mark Lapka
- State Senate District 24· Jim Mehlhaff
- State Senate District 25· Tom Pischke
- State Senate District 26· Tamara Grove
- State Senate District 27· Red Dawn Foster
- State Senate District 28· Sam Marty
- State Senate District 29· John Carley
- State Senate District 30· Amber Hulse
- State Senate District 31· Randy Deibert
- State Senate District 32· Helene Duhamel
- State Senate District 33· Curt Voight
- State Senate District 34· Taffy Howard
- State Senate District 35· Greg Blanc
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Official results for South Dakota
History (29 elections for this seat)
- Votes for listed candidates
- 11,075
- Election day
- November 5, 2024
- District map
- Older district map (2022 to 2024)
South Dakota Senate District 12, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share RepublicanArch BealWon Republican 6,16755.7% DemocraticClay Hoffman Democratic 4,90844.3% - Votes for listed candidates
- 9,187
- Election day
- November 8, 2022
- District map
- Older district map (2022)
South Dakota Senate District 12, 1968 to 2024, 2022, every candidate Candidate Party Votes and share Share RepublicanArch BealWon Republican 4,95053.9% DemocraticJessica Meyers Democratic 4,23746.1% - Votes for listed candidates
- 12,205
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 12, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanR. Blake CurdWon(incumbent) Republican 6,59954.1% DemocraticJessica Meyers Democratic 5,60645.9% - Votes for listed candidates
- 9,714
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 12, 1968 to 2024, 2018, every candidate Candidate Party Votes and share Share RepublicanR. Blake CurdWon(incumbent) Republican 4,86950.1% DemocraticKasey Olivier Democratic 4,84549.9% - Votes for listed candidates
- 10,653
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 12, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanBlake Blake CurdWon(incumbent) Republican 6,22158.4% DemocraticJim Sanden Democratic 4,43241.6% - Votes for listed candidates
- 7,101
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 12, 1968 to 2024, 2014, every candidate Candidate Party Votes and share Share RepublicanBlake Blake CurdWon Republican 4,26560.1% DemocraticJim Sanden Democratic 2,83639.9% - Votes for listed candidates
- 10,490
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
South Dakota Senate District 12, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanMark JohnstonWon(incumbent) Republican 5,90256.3% DemocraticKent Alberty Democratic 4,58843.7% - Votes for listed candidates
- 11,211
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 12, 1968 to 2024, 2010, every candidate Candidate Party Votes and share Share RepublicanMark JohnstonWon Republican 6,09454.4% DemocraticSandy Jerstad(incumbent) Democratic 5,11745.6% - Votes for listed candidates
- 13,746
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 12, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share DemocraticSandy JerstadWon(incumbent) Democratic 7,23352.6% RepublicanHal Wick Republican 6,51347.4% - Votes for listed candidates
- 10,330
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 12, 1968 to 2024, 2006, every candidate Candidate Party Votes and share Share DemocraticSandy JerstadWon Democratic 5,17550.1% RepublicanWilliam F. Earley(incumbent) Republican 5,15549.9% - Votes for listed candidates
- 11,549
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 12, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share RepublicanWilliam F. EarleyWon(incumbent) Republican 6,41855.6% DemocraticJohn R. McIntyre Democratic 5,13144.4% - Votes for listed candidates
- 9,270
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
South Dakota Senate District 12, 1968 to 2024, 2002, every candidate Candidate Party Votes and share Share RepublicanWilliam F. EarleyWon Republican 4,73551.1% DemocraticJohn R. McIntyre(incumbent) Democratic 4,53548.9% - Votes for listed candidates
- 8,176
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 12, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share DemocraticJohn R. McIntyreWon Democratic 4,22751.7% RepublicanWilliam F. Earley Republican 3,94948.3% - Votes for listed candidates
- 5,573
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 12, 1968 to 2024, 1998, every candidate Candidate Party Votes and share Share RepublicanKeith PaisleyWon(incumbent) Republican 5,573100.0% - Votes for listed candidates
- 9,061
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 12, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share RepublicanKeith PaisleyWon(incumbent) Republican 5,53161.0% DemocraticJohn Claussen Democratic 3,53039.0% - Votes for listed candidates
- 8,649
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 12, 1968 to 2024, 1994, every candidate Candidate Party Votes and share Share RepublicanKeith PaisleyWon(incumbent) Republican 5,20160.1% DemocraticJohn Claussen Democratic 3,44839.9% - Votes for listed candidates
- 10,127
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
South Dakota Senate District 12, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share RepublicanKeith PaisleyWon(incumbent) Republican 5,21051.5% DemocraticJohn Claussen Democratic 4,91748.5% - Votes for listed candidates
- 6,646
- Election day
- November 6, 1990
- District map
- Older district map (1984 to 1991)
South Dakota Senate District 12, 1968 to 2024, 1990, every candidate Candidate Party Votes and share Share RepublicanKeith PaisleyWon(incumbent) Republican 3,87958.4% DemocraticRobert Oconnor Democratic 2,76741.6% - Votes for listed candidates
- 8,794
- Election day
- November 8, 1988
- District map
- Older district map (1984 to 1991)
South Dakota Senate District 12, 1968 to 2024, 1988, every candidate Candidate Party Votes and share Share RepublicanKeith PaisleyWon(incumbent) Republican 4,78054.4% DemocraticRobert Oconnor Democratic 4,01445.6% - Votes for listed candidates
- 5,370
- Election day
- November 4, 1986
- District map
- Older district map (1984 to 1991)
South Dakota Senate District 12, 1968 to 2024, 1986, every candidate Candidate Party Votes and share Share RepublicanKeith PaisleyWon(incumbent) Republican 5,370100.0% - Votes for listed candidates
- 8,691
- Election day
- November 6, 1984
- District map
- Older district map (1984 to 1991)
South Dakota Senate District 12, 1968 to 2024, 1984, every candidate Candidate Party Votes and share Share RepublicanKeith PaisleyWon Republican 5,58064.2% DemocraticLeroy J. Day Democratic 3,11135.8% - Votes for listed candidates
- 7,547
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1983)
South Dakota Senate District 12, 1968 to 2024, 1982, every candidate Candidate Party Votes and share Share DemocraticRoger McKellipsWon(incumbent) Democratic 4,72862.6% RepublicanGene Kroger Republican 2,81937.4% - Votes for listed candidates
- 10,754
- Election day
- November 4, 1980
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 12, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share DemocraticRoger McKellipsWon Democratic 6,52260.6% RepublicanLarry J. Tidemann Republican 4,23239.4% - Votes for listed candidates
- 8,919
- Election day
- November 7, 1978
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 12, 1968 to 2024, 1978, every candidate Candidate Party Votes and share Share RepublicanHarold AndersonWon Republican 4,53050.8% DemocraticJohn H. McMurry Jr. Democratic 4,38949.2% - Votes for listed candidates
- 9,693
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 12, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share DemocraticRoger McKellipsWon Democratic 5,38655.6% RepublicanHarold Anderson(incumbent) Republican 4,30744.4% - Votes for listed candidates
- 8,733
- Election day
- November 4, 1974
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 12, 1968 to 2024, 1974, every candidate Candidate Party Votes and share Share RepublicanHarold AndersonWon(incumbent) Republican 4,57352.4% DemocraticW. Thomas Osborne Democratic 4,16047.6% - Votes for listed candidates
- 9,752
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
South Dakota Senate District 12, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share RepublicanHarold AndersonWon Republican 5,37155.1% DemocraticDick H. Reiners Democratic 4,38144.9% - Votes for listed candidates
- 7,754
- Election day
- November 3, 1970
- District map
- Older district map (1966 to 1971)
South Dakota Senate District 12, 1968 to 2024, 1970, every candidate Candidate Party Votes and share Share DemocraticRobert T. CollingwoodWon Democratic 3,91450.5% RepublicanWendell Leafstedt(incumbent) Republican 3,84049.5% - Votes for listed candidates
- 6,971
- Election day
- November 5, 1968
- District map
- Older district map (1966 to 1971)
South Dakota Senate District 12, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share RepublicanWendell LeafstedtWon Republican 5,98985.9% IndependentLewis P. Peterson Independent 98214.1%
- 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.
Download and cite
Cite this page
Election Wrld. (2026). South Dakota Senate District 12, election results 1968 to 2024. https://www.electionwrld.com/sd/senate/12. 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/sldu:12
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse)Data as of Oct 28, 2026