Wisconsin State Senate District 18
Next vote Tue, Nov 3, 2026 · Represented by Kristin Dassler-Alfheim Democratic · Member list as of Oct 28
This seat has no race on the official 2026 list.
- Last election
- Kristin Alfheim (Democratic) won by 6.6 points, 2024
More about this seat
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- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
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Official results for Wisconsin
History (15 elections for this seat)
- Votes for listed candidates
- 88,032
- Election day
- November 5, 2024
- District map
- Older district map (2024)
Wisconsin Senate District 18, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share DemocraticKristin AlfheimWon Democratic 46,87853.3% RepublicanAnthony Wayne Phillips Republican 41,07946.7% Scattered write-ins Write-in 750.1% - Votes for listed candidates
- 88,826
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Wisconsin Senate District 18, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanDan FeyenWon(incumbent) Republican 52,49059.1% DemocraticAaron M. Wojciechowski Democratic 36,27440.8% Scattered write-ins Write-in 620.1% - Votes for listed candidates
- 82,529
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Wisconsin Senate District 18, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanDan FeyenWon Republican 46,07655.8% DemocraticMark L. Harris Democratic 36,36644.1% Scattered write-ins Write-in 870.1% - Votes for listed candidates
- 85,648
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Wisconsin Senate District 18, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanRick GudexWon Republican 43,07950.3% DemocraticJessica King Democratic 42,47949.6% Scattered write-ins Write-in 900.1% - Votes for listed candidates
- 83,520
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2011)
Wisconsin Senate District 18, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share RepublicanRandy HopperWon Republican 41,85250.1% DemocraticJessica King Democratic 41,66849.9% - Votes for listed candidates
- 63,706
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2011)
Wisconsin Senate District 18, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share RepublicanCarol A. RoesslerWon(incumbent) Republican 63,706100.0% - Votes for listed candidates
- 75,993
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
Wisconsin Senate District 18, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share RepublicanCarol A. RoesslerWon Republican 51,66268.0% DemocraticKevin McGee Democratic 24,33132.0% - Votes for listed candidates
- 63,335
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Wisconsin Senate District 18, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share RepublicanCarol A. BuettnerWon(incumbent) Republican 46,72173.8% DemocraticFred Frederickson Democratic 16,61426.2% - Votes for listed candidates
- 73,363
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Wisconsin Senate District 18, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share RepublicanCarol A. BuettnerWon(incumbent) Republican 45,75762.4% DemocraticBetty Ziewacz Democratic 27,60637.6% - Votes for listed candidates
- 61,888
- Election day
- November 8, 1988
- District map
- Older district map (1984 to 1991)
Wisconsin Senate District 18, 1968 to 2024, 1988, every candidate Candidate Party Votes and share Share RepublicanCarol A. BuettnerWon Republican 42,54268.7% DemocraticMary Gropp Democratic 19,34531.3% Scattered write-ins Write-in 10.0% - Votes for listed candidates
- 63,474
- Election day
- November 6, 1984
- District map
- Older district map (1984 to 1991)
Wisconsin Senate District 18, 1968 to 2024, 1984, every candidate Candidate Party Votes and share Share RepublicanScott McCallumWon(incumbent) Republican 34,29654.0% DemocraticPeggy A. Lautenschlager Democratic 29,17746.0% Scattered write-ins Write-in 10.0% - Votes for listed candidates
- 47,648
- Election day
- November 4, 1980
- District map
- Older district map (1972 to 1981)
Wisconsin Senate District 18, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share RepublicanScott McCallumWon(incumbent) Republican 47,647100.0% Scattered write-ins Write-in 10.0% - Votes for listed candidates
- 59,287
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1981)
Wisconsin Senate District 18, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share RepublicanScott McCallumWon Republican 39,19466.1% DemocraticDaniel L. Klawitter Democratic 20,06233.8% Scattered write-ins Write-in 310.1% - Votes for listed candidates
- 51,502
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
Wisconsin Senate District 18, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share RepublicanWalter G. HollanderWon(incumbent) Republican 33,44764.9% DemocraticDaryl Laatsch Democratic 18,05235.0% Scattered write-ins Write-in 30.0% - Votes for listed candidates
- 42,946
- Election day
- November 5, 1968
- District map
- Older district map (1964 to 1971)
Wisconsin Senate District 18, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share RepublicanWalter G. HollanderWon(incumbent) Republican 27,39363.8% DemocraticGordon E. Loehr Democratic 15,55336.2%
- 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 2020: 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
Only part of this chamber is up in a given cycle. Which districts vote on which date is not on file. Last contest in this district on file: 2024.
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Cite this page
Election Wrld. (2026). Wisconsin State Senate District 18, election results 1968 to 2024. https://www.electionwrld.com/wi/senate/18. Retrieved October 31, 2026.
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<iframe src="https://www.electionwrld.com/embed/wi/senate/18" title="Wisconsin Senate District 18" width="100%" height="400" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Data: <a href="https://www.electionwrld.com">Election Wrld</a>, CC BY 4.0</p>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:wi/sldu:18
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), MEDSL 2024 official precinct returnsData as of Oct 28, 2026