South Dakota Senate District 11

Tue, Nov 3 · Represented by Chris Karr Republican · Member list as of Oct 28

Chris KarrRepublican · Incumbent2 years since first win on file

No published poll names both candidates.Last result · 2024 general: Chris Karr (R) 58.9, Steve Natz (D) 41.1

Aaron MatsonDemocratic

Last election: Chris Karr (Republican) won by 17.8 points, 2024
On the 2026 ballot: 2 candidates

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Left column: KarrRight column: Matson

Races won and lost: 1-0; None on file
Years since first win on file: 2; Not available

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Wins and losses count the races in our results files, the same as each profile.

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Candidates on the ballot

Aaron MatsonDemocratic
Chris KarrIncumbentRepublican

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)

South Dakota Senate District 11, 1968 to 2024, 2024, every candidate
Candidate	Party	Votes and share	Share
RepublicanChris KarrWon	Republican	6,79658.9%	58.9%
DemocraticSteve Natz	Democratic	4,74741.1%	41.1%

Votes for listed candidates: 9,575
Election day: November 8, 2022
District map: Older district map (2022)

South Dakota Senate District 11, 1968 to 2024, 2022, every candidate
Candidate	Party	Votes and share	Share
RepublicanJim StalzerWon(incumbent)	Republican	5,28955.2%	55.2%
DemocraticSheryl L. Johnson	Democratic	4,28644.8%	44.8%

Votes for listed candidates: 13,633
Election day: November 3, 2020
District map: Older district map (2012 to 2021)

South Dakota Senate District 11, 1968 to 2024, 2020, every candidate
Candidate	Party	Votes and share	Share
RepublicanJim StalzerWon(incumbent)	Republican	8,24460.5%	60.5%
DemocraticTom Cool	Democratic	5,38939.5%	39.5%

Votes for listed candidates: 10,248
Election day: November 6, 2018
District map: Older district map (2012 to 2021)

South Dakota Senate District 11, 1968 to 2024, 2018, every candidate
Candidate	Party	Votes and share	Share
RepublicanJim StalzerWon(incumbent)	Republican	6,19060.4%	60.4%
DemocraticKevin Elsing	Democratic	4,05839.6%	39.6%

South Dakota Senate District 11, 1968 to 2024, 2016, every candidate
Candidate	Party	Votes and share	Share
RepublicanJim StalzerWon	Republican	6,94460.8%	60.8%
DemocraticTom Cool	Democratic	4,48139.2%	39.2%

Votes for listed candidates: 7,616
Election day: November 4, 2014
District map: Older district map (2012 to 2021)

South Dakota Senate District 11, 1968 to 2024, 2014, every candidate
Candidate	Party	Votes and share	Share
RepublicanDavid M. OmdahlWon(incumbent)	Republican	4,54559.7%	59.7%
DemocraticTom Cool	Democratic	3,07140.3%	40.3%

South Dakota Senate District 11, 1968 to 2024, 2012, every candidate
Candidate	Party	Votes and share	Share
RepublicanDavid M. OmdahlWon	Republican	5,88856.8%	56.8%
DemocraticTom Cool	Democratic	4,48843.3%	43.3%

South Dakota Senate District 11, 1968 to 2024, 2010, every candidate
Candidate	Party	Votes and share	Share
RepublicanTodd SchlekewayWon	Republican	7,05564.8%	64.8%
DemocraticTom Cool	Democratic	3,82835.2%	35.2%

Votes for listed candidates: 12,989
Election day: November 4, 2008
District map: Older district map (2002 to 2011)

South Dakota Senate District 11, 1968 to 2024, 2008, every candidate
Candidate	Party	Votes and share	Share
RepublicanJason M. GantWon(incumbent)	Republican	6,84552.7%	52.7%
DemocraticNate Welch	Democratic	5,63243.4%	43.4%
OtherD. Scott Bartlett	Other	5123.9%	3.9%

Votes for listed candidates: 10,482
Election day: November 7, 2006
District map: Older district map (2002 to 2011)

South Dakota Senate District 11, 1968 to 2024, 2006, every candidate
Candidate	Party	Votes and share	Share
RepublicanJason M. GantWon(incumbent)	Republican	5,81555.5%	55.5%
DemocraticRebekah A. Cradduck	Democratic	4,19240.0%	40.0%
OtherD. Scott Bartlett	Other	4754.5%	4.5%

Votes for listed candidates: 12,017
Election day: November 2, 2004
District map: Older district map (2002 to 2011)

South Dakota Senate District 11, 1968 to 2024, 2004, every candidate
Candidate	Party	Votes and share	Share
RepublicanJason M. GantWon	Republican	7,22360.1%	60.1%
DemocraticLance Moran	Democratic	4,39836.6%	36.6%
OtherD. Scott Bartlett	Other	3963.3%	3.3%

South Dakota Senate District 11, 1968 to 2024, 2002, every candidate
Candidate	Party	Votes and share	Share
RepublicanMitch RichterWon	Republican	6,548100.0%	100.0%

South Dakota Senate District 11, 1968 to 2024, 2000, every candidate
Candidate	Party	Votes and share	Share
RepublicanDick HainjeWon(incumbent)	Republican	9,140100.0%	100.0%

Votes for listed candidates: 7,150
Election day: November 3, 1998
District map: Older district map (1992 to 2001)

South Dakota Senate District 11, 1968 to 2024, 1998, every candidate
Candidate	Party	Votes and share	Share
RepublicanDick HainjeWon(incumbent)	Republican	5,02270.2%	70.2%
DemocraticDonald J. Rose	Democratic	2,12829.8%	29.8%

Votes for listed candidates: 9,823
Election day: November 5, 1996
District map: Older district map (1992 to 2001)

South Dakota Senate District 11, 1968 to 2024, 1996, every candidate
Candidate	Party	Votes and share	Share
RepublicanDick HainjeWon	Republican	6,29764.1%	64.1%
DemocraticDale L. Chell	Democratic	3,52635.9%	35.9%

Votes for listed candidates: 9,072
Election day: November 8, 1994
District map: Older district map (1992 to 2001)

South Dakota Senate District 11, 1968 to 2024, 1994, every candidate
Candidate	Party	Votes and share	Share
DemocraticPam NelsonWon(incumbent)	Democratic	4,90254.0%	54.0%
RepublicanBill Hassler	Republican	4,17046.0%	46.0%

Votes for listed candidates: 9,539
Election day: November 3, 1992
District map: Older district map (1992 to 2001)

South Dakota Senate District 11, 1968 to 2024, 1992, every candidate
Candidate	Party	Votes and share	Share
DemocraticPam NelsonWon(incumbent)	Democratic	5,50957.8%	57.8%
RepublicanStephen Gaylord	Republican	4,03042.3%	42.3%

Votes for listed candidates: 8,630
Election day: November 6, 1990
District map: Older district map (1984 to 1991)

South Dakota Senate District 11, 1968 to 2024, 1990, every candidate
Candidate	Party	Votes and share	Share
DemocraticPam NelsonWon(incumbent)	Democratic	5,21260.4%	60.4%
RepublicanLorin D. Pankratz	Republican	3,41839.6%	39.6%

Votes for listed candidates: 10,634
Election day: November 8, 1988
District map: Older district map (1984 to 1991)

South Dakota Senate District 11, 1968 to 2024, 1988, every candidate
Candidate	Party	Votes and share	Share
DemocraticPam NelsonWon	Democratic	6,00456.5%	56.5%
RepublicanSheldon R. Songstad(incumbent)	Republican	4,63043.5%	43.5%

Votes for listed candidates: 8,619
Election day: November 4, 1986
District map: Older district map (1984 to 1991)

South Dakota Senate District 11, 1968 to 2024, 1986, every candidate
Candidate	Party	Votes and share	Share
RepublicanSheldon R. SongstadWon(incumbent)	Republican	4,53252.6%	52.6%
DemocraticPatricia Pilcher	Democratic	4,08747.4%	47.4%

Votes for listed candidates: 8,639
Election day: November 6, 1984
District map: Older district map (1984 to 1991)

South Dakota Senate District 11, 1968 to 2024, 1984, every candidate
Candidate	Party	Votes and share	Share
RepublicanSheldon R. SongstadWon	Republican	4,92257.0%	57.0%
DemocraticWilliam J. Sandness	Democratic	3,71743.0%	43.0%

Votes for listed candidates: 171,282
Election day: November 2, 1982
Seats: 5
District map: Older district map (1982 to 1983)

South Dakota Senate District 11, 1968 to 2024, 1982, every candidate
Candidate	Party	Votes and share	Share
RepublicanAlva W. ScarbroughWon(incumbent)	Republican	18,69110.9%	10.9%
RepublicanRobert R. GiebinkWon	Republican	18,61310.9%	10.9%
RepublicanGary W. HansonWon	Republican	18,17010.6%	10.6%
RepublicanHenry J. Carlson Jr.Won	Republican	18,02210.5%	10.5%
RepublicanTom KruegerWon	Republican	17,69810.3%	10.3%
DemocraticPatrick L. Oconnor	Democratic	17,49810.2%	10.2%
DemocraticKaren Muenster	Democratic	17,18510.0%	10.0%
DemocraticPamela Nelson	Democratic	16,6049.7%	9.7%
DemocraticRichard Barnes	Democratic	16,3399.5%	9.5%
DemocraticE. Patrick Gribbin	Democratic	12,4627.3%	7.3%

Votes for listed candidates: 225,771
Election day: November 4, 1980
Seats: 5
District map: Older district map (1972 to 1981)

South Dakota Senate District 11, 1968 to 2024, 1980, every candidate
Candidate	Party	Votes and share	Share
DemocraticMichael OconnorWon	Democratic	27,27212.1%	12.1%
RepublicanWalter Bones Jr.Won	Republican	26,66011.8%	11.8%
RepublicanWendell HansonWon	Republican	25,61311.3%	11.3%
RepublicanAlva W. ScarbroughWon(incumbent)	Republican	24,73611.0%	11.0%
RepublicanRichard O. GregersonWon(incumbent)	Republican	24,04010.7%	10.7%
RepublicanHenry J. Carlson Jr.	Republican	23,32010.3%	10.3%
DemocraticJerry Mayer(incumbent)	Democratic	22,83910.1%	10.1%
DemocraticVernal L. Anderson	Democratic	18,3778.1%	8.1%
DemocraticEarl McCart	Democratic	18,2928.1%	8.1%
DemocraticA. Thomas Pokela	Democratic	14,6226.5%	6.5%

Votes for listed candidates: 164,275
Election day: November 7, 1978
Seats: 5
District map: Older district map (1972 to 1981)

South Dakota Senate District 11, 1968 to 2024, 1978, every candidate
Candidate	Party	Votes and share	Share
RepublicanRichard D. FlynnWon	Republican	18,55011.3%	11.3%
RepublicanArnold E. AmundsonWon	Republican	17,58410.7%	10.7%
RepublicanAlva W. ScarbroughWon	Republican	17,50410.7%	10.7%
RepublicanRichard O. GregersonWon	Republican	17,09610.4%	10.4%
DemocraticJerry MayerWon	Democratic	16,92710.3%	10.3%
RepublicanHenry J. Carlson Jr.(incumbent)	Republican	16,70110.2%	10.2%
DemocraticGeorge Kirk	Democratic	15,7009.6%	9.6%
DemocraticRobert Oconnor	Democratic	15,5909.5%	9.5%
DemocraticParnell Donohue	Democratic	14,8079.0%	9.0%
DemocraticEarl McCart	Democratic	13,8168.4%	8.4%

Votes for listed candidates: 193,836
Election day: November 2, 1976
Seats: 5
District map: Older district map (1972 to 1981)

South Dakota Senate District 11, 1968 to 2024, 1976, every candidate
Candidate	Party	Votes and share	Share
RepublicanSheldon R. SongstadWon(incumbent)	Republican	25,56513.2%	13.2%
RepublicanWendell HansonWon	Republican	24,51612.7%	12.7%
DemocraticMichael OconnorWon(incumbent)	Democratic	23,24512.0%	12.0%
DemocraticDavid BillionWon(incumbent)	Democratic	22,59111.7%	11.7%
RepublicanHenry J. Carlson Jr.Won	Republican	22,53811.6%	11.6%
RepublicanLloyd L. Jones	Republican	21,41411.1%	11.1%
DemocraticElaine McCart	Democratic	18,1339.3%	9.3%
DemocraticJerry Mayer(incumbent)	Democratic	18,0869.3%	9.3%
DemocraticElizabeth Shreves	Democratic	17,7489.2%	9.2%

Votes for listed candidates: 189,832
Election day: November 4, 1974
Seats: 5
District map: Older district map (1972 to 1981)

South Dakota Senate District 11, 1968 to 2024, 1974, every candidate
Candidate	Party	Votes and share	Share
DemocraticMichael OconnorWon(incumbent)	Democratic	24,10812.7%	12.7%
DemocraticDavid BillionWon	Democratic	20,23610.7%	10.7%
DemocraticMarilynn KelmWon	Democratic	20,09710.6%	10.6%
DemocraticJerome MayerWon(incumbent)	Democratic	19,34710.2%	10.2%
RepublicanSheldon R. SongstadWon	Republican	19,29010.2%	10.2%
RepublicanOscar Austad(incumbent)	Republican	18,8479.9%	9.9%
DemocraticWally G. Myers	Democratic	17,9229.4%	9.4%
RepublicanPeter P. Hegg	Republican	17,1189.0%	9.0%
RepublicanMarie Mills	Republican	16,5278.7%	8.7%
RepublicanGeorge Kirk	Republican	16,3408.6%	8.6%

Votes for listed candidates: 211,619
Election day: November 7, 1972
Seats: 5
District map: Older district map (1972 to 1981)

South Dakota Senate District 11, 1968 to 2024, 1972, every candidate
Candidate	Party	Votes and share	Share
DemocraticMichael OconnorWon	Democratic	26,31312.4%	12.4%
RepublicanOscar AustadWon(incumbent)	Republican	22,35810.6%	10.6%
DemocraticJerry MayerWon	Democratic	22,20710.5%	10.5%
RepublicanTom MillsWon(incumbent)	Republican	22,00310.4%	10.4%
RepublicanHolger AndersonWon(incumbent)	Republican	21,22310.0%	10.0%
DemocraticMary Wallner	Democratic	20,1489.5%	9.5%
RepublicanJerry Simmons	Republican	19,9699.4%	9.4%
DemocraticWallace G. Myers	Democratic	19,5419.2%	9.2%
DemocraticLeroy A. Johnson	Democratic	19,1749.1%	9.1%
RepublicanWendell Hanson	Republican	18,6838.8%	8.8%

Votes for listed candidates: 120,602
Election day: November 3, 1970
Seats: 4
District map: Older district map (1966 to 1971)

South Dakota Senate District 11, 1968 to 2024, 1970, every candidate
Candidate	Party	Votes and share	Share
RepublicanHolger AndersonWon(incumbent)	Republican	16,60713.8%	13.8%
RepublicanOscar AustadWon	Republican	16,60713.8%	13.8%
RepublicanTom MillsWon	Republican	16,49813.7%	13.7%
RepublicanHenry T. QuinnWon(incumbent)	Republican	15,07512.5%	12.5%
DemocraticWalter Flanagan	Democratic	14,10611.7%	11.7%
DemocraticAl Bader	Democratic	13,95011.6%	11.6%
DemocraticClem Weber	Democratic	13,88611.5%	11.5%
DemocraticW. E. Holiway	Democratic	13,87311.5%	11.5%

Votes for listed candidates: 142,825
Election day: November 5, 1968
Seats: 4
District map: Older district map (1966 to 1971)

South Dakota Senate District 11, 1968 to 2024, 1968, every candidate
Candidate	Party	Votes and share	Share
RepublicanFrank GibbsWon(incumbent)	Republican	21,48315.0%	15.0%
RepublicanHolger AndersonWon(incumbent)	Republican	21,43015.0%	15.0%
RepublicanHenry T. QuinnWon	Republican	20,27714.2%	14.2%
RepublicanArt B. AndersonWon(incumbent)	Republican	19,67113.8%	13.8%
DemocraticMary Wallner	Democratic	15,55410.9%	10.9%
DemocraticW. E. Holiway	Democratic	15,27310.7%	10.7%
DemocraticDonald F. Lewis	Democratic	14,69110.3%	10.3%
DemocraticJim Ronan	Democratic	14,44610.1%	10.1%

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.

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Election Wrld. (2026). South Dakota Senate District 11, election results 1968 to 2024. https://www.electionwrld.com/sd/senate/11. 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:11

DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse)Data as of Oct 28, 2026