Arizona State Senate District 12
Next vote Tue, Nov 3, 2026 · Represented by Mitzi Epstein Democratic · Member list as of Oct 28
Not available. No official list was read (azsos.gov blocks automated access). Arizona Secretary of State, Elections
- Last election
- Mitzi Epstein (Democratic) won by 16.3 points, 2024
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History (28 elections for this seat)
- Votes for listed candidates
- 121,431
- Election day
- November 5, 2024
- District map
- Older district map (2022 to 2024)
Arizona Senate District 12, 1970 to 2024, 2024, every candidate Candidate Party Votes and share Share DemocraticMitzi EpsteinWonName as filed: Denise "Mitzi" Epstein Democratic 70,49958.1% RepublicanCara Vicini Republican 50,79641.8% Scattered write-ins Write-in 1360.1% - Votes for listed candidates
- 100,357
- Election day
- November 8, 2022
- District map
- Older district map (2022)
Arizona Senate District 12, 1970 to 2024, 2022, every candidate Candidate Party Votes and share Share DemocraticDenise EpsteinWon Democratic 58,34958.1% RepublicanDavid Wayne Richardson Republican 42,00841.9% - Votes for listed candidates
- 156,001
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Arizona Senate District 12, 1970 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanWarren PetersenWon Republican 96,14961.6% DemocraticLynsey Robinson Democratic 59,85238.4% - Votes for listed candidates
- 105,408
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
Arizona Senate District 12, 1970 to 2024, 2018, every candidate Candidate Party Votes and share Share RepublicanEddie FarnsworthWon Republican 60,95957.8% DemocraticElizabeth Brown Democratic 44,44942.2% - Votes for listed candidates
- 106,534
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Arizona Senate District 12, 1970 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanWarren PetersenWon Republican 69,35665.1% DemocraticElizabeth Brown Democratic 37,17834.9% - Votes for listed candidates
- 54,937
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2021)
Arizona Senate District 12, 1970 to 2024, 2014, every candidate Candidate Party Votes and share Share RepublicanAndy BiggsWon(incumbent) Republican 35,82065.2% DemocraticScott Glover Democratic 19,11734.8% - Votes for listed candidates
- 63,812
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Arizona Senate District 12, 1970 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanAndy BiggsWon(incumbent) Republican 63,812100.0% - Votes for listed candidates
- 72,707
- Election day
- November 2, 2010
- District map
- Older district map (2004 to 2011)
Arizona Senate District 12, 1970 to 2024, 2010, every candidate Candidate Party Votes and share Share RepublicanJohn NelsonWon(incumbent) Republican 41,37956.9% DemocraticTyler Kissell Democratic 27,55937.9% LibertarianMichael White Libertarian 3,7695.2% - Votes for listed candidates
- 100,114
- Election day
- November 4, 2008
- District map
- Older district map (2004 to 2011)
Arizona Senate District 12, 1970 to 2024, 2008, every candidate Candidate Party Votes and share Share RepublicanJohn NelsonWon Republican 52,55252.5% DemocraticAngela Cotera Democratic 47,56247.5% - Votes for listed candidates
- 39,627
- Election day
- November 7, 2006
- District map
- Older district map (2004 to 2011)
Arizona Senate District 12, 1970 to 2024, 2006, every candidate Candidate Party Votes and share Share RepublicanRobert BlenduWon(incumbent) Republican 39,627100.0% - Votes for listed candidates
- 69,097
- Election day
- November 2, 2004
- District map
- Older district map (2004 to 2011)
Arizona Senate District 12, 1970 to 2024, 2004, every candidate Candidate Party Votes and share Share RepublicanRobert BlenduWon(incumbent) Republican 37,39754.1% DemocraticKathi Foster Democratic 31,70045.9% - Votes for listed candidates
- 34,275
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2003)
Arizona Senate District 12, 1970 to 2024, 2002, every candidate Candidate Party Votes and share Share RepublicanRobert BlenduWon Republican 18,42653.8% DemocraticPeter Mahoney Democratic 15,84946.2% - Votes for listed candidates
- 61,657
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
Arizona Senate District 12, 1970 to 2024, 2000, every candidate Candidate Party Votes and share Share DemocraticMark OsterlohWon Democratic 34,70756.3% RepublicanToni Hellon Republican 26,95043.7% - Votes for listed candidates
- 45,101
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
Arizona Senate District 12, 1970 to 2024, 1998, every candidate Candidate Party Votes and share Share RepublicanAnn DayWon(incumbent) Republican 39,16286.8% LibertarianTed F. Schlinkert Libertarian 5,93913.2% - Votes for listed candidates
- 26,795
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Arizona Senate District 12, 1970 to 2024, 1996, every candidate Candidate Party Votes and share Share RepublicanAnn DayWon(incumbent) Republican 26,795100.0% - Votes for listed candidates
- 46,576
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2001)
Arizona Senate District 12, 1970 to 2024, 1994, every candidate Candidate Party Votes and share Share RepublicanAnn DayWon(incumbent) Republican 38,83883.4% LibertarianRoberta McMillan Libertarian 7,73816.6% - Votes for listed candidates
- 52,199
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Arizona Senate District 12, 1970 to 2024, 1992, every candidate Candidate Party Votes and share Share RepublicanAnn DayWon(incumbent) Republican 42,80282.0% LibertarianRoberta McMillan Libertarian 9,39718.0% - Votes for listed candidates
- 44,005
- Election day
- November 6, 1990
- District map
- Older district map (1982 to 1991)
Arizona Senate District 12, 1970 to 2024, 1990, every candidate Candidate Party Votes and share Share RepublicanAnn DayWon Republican 23,68053.8% DemocraticKatherine Jacobsen Democratic 20,31046.1% OtherEarl Horley Other 150.0% - Votes for listed candidates
- 49,257
- Election day
- November 8, 1988
- District map
- Older district map (1982 to 1991)
Arizona Senate District 12, 1970 to 2024, 1988, every candidate Candidate Party Votes and share Share RepublicanJohn T. MawhinneyWon(incumbent) Republican 25,12451.0% DemocraticReid Ewing Democratic 24,13349.0% - Votes for listed candidates
- 27,152
- Election day
- November 4, 1986
- District map
- Older district map (1982 to 1991)
Arizona Senate District 12, 1970 to 2024, 1986, every candidate Candidate Party Votes and share Share RepublicanJohn T. MawhinneyWon(incumbent) Republican 27,152100.0% - Votes for listed candidates
- 42,391
- Election day
- November 6, 1984
- District map
- Older district map (1982 to 1991)
Arizona Senate District 12, 1970 to 2024, 1984, every candidate Candidate Party Votes and share Share RepublicanJohn T. MawhinneyWon(incumbent) Republican 26,88563.4% DemocraticWilliam E. Minette Democratic 15,50636.6% - Votes for listed candidates
- 30,140
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1991)
Arizona Senate District 12, 1970 to 2024, 1982, every candidate Candidate Party Votes and share Share RepublicanJohn T. MawhinneyWon(incumbent) Republican 16,08953.4% DemocraticDavid E. Bradshaw Democratic 14,04546.6% OtherDavid Foster Other 60.0% - Votes for listed candidates
- 38,241
- Election day
- November 4, 1980
- District map
- Older district map (1972 to 1981)
Arizona Senate District 12, 1970 to 2024, 1980, every candidate Candidate Party Votes and share Share RepublicanJohn T. MawhinneyWon(incumbent) Republican 19,92452.1% DemocraticKay Federoff Democratic 18,31747.9% - Votes for listed candidates
- 21,401
- Election day
- November 7, 1978
- District map
- Older district map (1972 to 1981)
Arizona Senate District 12, 1970 to 2024, 1978, every candidate Candidate Party Votes and share Share RepublicanJohn T. MawhinneyWon Republican 11,90855.6% DemocraticSue Dye(incumbent) Democratic 9,49344.4% - Votes for listed candidates
- 29,434
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1981)
Arizona Senate District 12, 1970 to 2024, 1976, every candidate Candidate Party Votes and share Share DemocraticSue DyeWon(incumbent) Democratic 14,99550.9% RepublicanPete Hershberger Republican 14,43949.1% - Votes for listed candidates
- 21,933
- Election day
- November 4, 1974
- District map
- Older district map (1972 to 1981)
Arizona Senate District 12, 1970 to 2024, 1974, every candidate Candidate Party Votes and share Share DemocraticSue DyeWon Democratic 11,17350.9% RepublicanDouglas S. Holsclaw(incumbent) Republican 10,76049.1% - Votes for listed candidates
- 21,618
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
Arizona Senate District 12, 1970 to 2024, 1972, every candidate Candidate Party Votes and share Share RepublicanDouglas S. HolsclawWon(incumbent) Republican 16,87578.1% OtherCarolyn Meinel Henson Other 4,74321.9% - Votes for listed candidates
- 10,397
- Election day
- November 3, 1970
- District map
- Older district map (1970 to 1971)
Arizona Senate District 12, 1970 to 2024, 1970, every candidate Candidate Party Votes and share Share DemocraticSam LenaWon(incumbent) Democratic 10,397100.0%
- 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
- 1970 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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Cite this page
Election Wrld. (2026). Arizona State Senate District 12, election results 1970 to 2024. https://www.electionwrld.com/az/senate/12. Retrieved October 31, 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:az/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