Wisconsin State Senate District 12
Next vote Tue, Nov 3, 2026 · Represented by Mary Felzkowski Republican · Member list as of Oct 28
This seat has no race on the official 2026 list.
- Last election
- Mary Felzkowski (Republican) won by 35.1 points, 2024
More about this seat
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- Independent
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- 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
- 109,936
- Election day
- November 5, 2024
- District map
- Older district map (2024)
Wisconsin Senate District 12, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share RepublicanMary FelzkowskiWon Republican 74,16267.5% DemocraticAndi Rich Democratic 35,62832.4% Scattered write-ins Write-in 1460.1% - Votes for listed candidates
- 103,256
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Wisconsin Senate District 12, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanMary FelzkowskiWonName as filed: Mary Czaja Felzkowski Republican 67,80065.7% DemocraticEd Vocke Democratic 35,38634.3% Scattered write-ins Write-in 700.1% - Votes for listed candidates
- 91,028
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Wisconsin Senate District 12, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanTom TiffanyWon(incumbent) Republican 57,27362.9% DemocraticBryan Van Stippen Democratic 33,71337.0% Scattered write-ins Write-in 420.1% - Votes for listed candidates
- 90,994
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Wisconsin Senate District 12, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanTom TiffanyWon Republican 51,17656.2% DemocraticSusan Sommer Democratic 36,80940.5% IndependentPaul O. Ehlers Independent 2,9643.3% Scattered write-ins Write-in 450.1% - Votes for listed candidates
- 85,075
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2011)
Wisconsin Senate District 12, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share DemocraticJim HolperinWon Democratic 43,59551.2% RepublicanTom Tiffany Republican 41,48048.8% - Votes for listed candidates
- 88,406
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2011)
Wisconsin Senate District 12, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share DemocraticRoger M. BreskeWon(incumbent) Democratic 47,28753.5% RepublicanTom Tiffany Republican 41,11946.5% - Votes for listed candidates
- 62,970
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
Wisconsin Senate District 12, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share DemocraticRoger M. BreskeWon(incumbent) Democratic 55,69288.4% LibertarianJohn E. Bailey Libertarian 7,27811.6% - Votes for listed candidates
- 70,058
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Wisconsin Senate District 12, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share DemocraticRoger M. BreskeWon(incumbent) Democratic 40,22057.4% RepublicanNancy Levanetz Republican 29,83842.6% - Votes for listed candidates
- 75,044
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Wisconsin Senate District 12, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share DemocraticRoger M. BreskeWon Democratic 39,28252.4% RepublicanRobert G. Ourada Republican 35,76247.6% - Votes for listed candidates
- 65,001
- Election day
- November 8, 1988
- District map
- Older district map (1984 to 1991)
Wisconsin Senate District 12, 1968 to 2024, 1988, every candidate Candidate Party Votes and share Share DemocraticLloyd H. KincaidWon(incumbent) Democratic 35,27054.3% RepublicanJoseph W. Handrick Republican 29,73145.7% - Votes for listed candidates
- 67,638
- Election day
- November 6, 1984
- District map
- Older district map (1984 to 1991)
Wisconsin Senate District 12, 1968 to 2024, 1984, every candidate Candidate Party Votes and share Share DemocraticLloyd H. KincaidWon Democratic 34,44450.9% RepublicanAnderson Republican 33,19249.1% Scattered write-ins Write-in 20.0% - Votes for listed candidates
- 55,679
- Election day
- November 4, 1980
- District map
- Older district map (1972 to 1981)
Wisconsin Senate District 12, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share RepublicanClifford W. KruegerWon(incumbent) Republican 55,656100.0% Scattered write-ins Write-in 230.0% - Votes for listed candidates
- 65,461
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1981)
Wisconsin Senate District 12, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share RepublicanClifford W. KruegerWon(incumbent) Republican 42,16764.4% DemocraticC. Charles Arndt Democratic 23,29235.6% Scattered write-ins Write-in 20.0% - Votes for listed candidates
- 57,670
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
Wisconsin Senate District 12, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share RepublicanClifford W. KruegerWon(incumbent) Republican 35,20761.0% DemocraticStanley Lato Democratic 21,42637.1% OtherAlbert C. Iwen Other 1,0331.8% Scattered write-ins Write-in 40.0% - Votes for listed candidates
- 44,280
- Election day
- November 5, 1968
- District map
- Older district map (1964 to 1971)
Wisconsin Senate District 12, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share RepublicanClifford W. KruegerWon(incumbent) Republican 28,04063.3% DemocraticVernon Niemuth Democratic 16,24036.7%
- 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 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 12, election results 1968 to 2024. https://www.electionwrld.com/wi/senate/12. Retrieved October 31, 2026.
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<iframe src="https://www.electionwrld.com/embed/wi/senate/12" title="Wisconsin Senate District 12" 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:12
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), MEDSL 2024 official precinct returnsData as of Oct 28, 2026