California State Senate District 12
Tue, Nov 3 · Represented by Shannon Grove Republican (not a candidate in 2026) · Member list as of Oct 28
No published poll names both candidates.Last result · 2022 general (different candidates): Shannon Grove (R) 68.7, Susanne Gundy (D) 31.3
- Last election
- Shannon Grove (Republican) won by 37.4 points, 2022
- On the 2026 ballot
- 2 candidates
More about this race
Candidates on the ballot
Open seat
The current holder, Shannon Grove, is not on the candidate list.
- Nathan MagsigRepublicanCounty Supervisor/Businessman
- William Brown Jr.LibertarianSocial Worker/Businessman
Source: elections.cdn.sos.ca.gov (PDF), dated Aug 27
All State Senate districts
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
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Official results for California
History (14 elections for this seat)
- Votes for listed candidates
- 285,483
- Election day
- November 8, 2022
- District map
- Older district map (2022)
California Senate District 12, 1970 to 2022, 2022, every candidate Candidate Party Votes and share Share RepublicanShannon GroveWon(incumbent) Republican 196,01468.7% DemocraticSusanne Gundy Democratic 89,46931.3% - Votes for listed candidates
- 203,077
- Election day
- November 6, 2018
- District map
- Older district map (2012 to 2021)
California Senate District 12, 1970 to 2022, 2018, every candidate Candidate Party Votes and share Share DemocraticAnna CaballeroWon Democratic 110,38654.4% RepublicanRob Poythress Republican 92,69145.6% - Votes for listed candidates
- 124,027
- Election day
- November 4, 2014
- District map
- Older district map (2012 to 2021)
California Senate District 12, 1970 to 2022, 2014, every candidate Candidate Party Votes and share Share RepublicanAnthony CannellaWon(incumbent) Republican 74,98860.5% DemocraticShawn K. Bagley Democratic 49,03939.5% - Votes for listed candidates
- 179,233
- Election day
- November 2, 2010
- District map
- Older district map (2002 to 2011)
California Senate District 12, 1970 to 2022, 2010, every candidate Candidate Party Votes and share Share RepublicanAnthony CannellaWon Republican 92,27051.5% DemocraticAnna Caballero Democratic 86,96348.5% - Votes for listed candidates
- 155,418
- Election day
- November 7, 2006
- District map
- Older district map (2002 to 2011)
California Senate District 12, 1970 to 2022, 2006, every candidate Candidate Party Votes and share Share RepublicanJeff DenhamWon(incumbent) Republican 90,28858.1% DemocraticWiley Nickel Democratic 65,13041.9% - Votes for listed candidates
- 152,861
- Election day
- November 5, 2002
- District map
- Older district map (2002 to 2011)
California Senate District 12, 1970 to 2022, 2002, every candidate Candidate Party Votes and share Share RepublicanJeff DenhamWon Republican 73,87748.3% DemocraticRusty Areias Democratic 72,03447.1% LibertarianDavid Eaton Libertarian 6,9504.5% - Votes for listed candidates
- 208,702
- Election day
- November 3, 1998
- District map
- Older district map (1992 to 2001)
California Senate District 12, 1970 to 2022, 1998, every candidate Candidate Party Votes and share Share RepublicanDick MonteithWon(incumbent) Republican 110,69053.0% DemocraticSal Cannella Democratic 91,62343.9% LibertarianMary Lee Gowland Libertarian 6,3893.1% - Votes for listed candidates
- 203,999
- Election day
- November 8, 1994
- District map
- Older district map (1992 to 2001)
California Senate District 12, 1970 to 2022, 1994, every candidate Candidate Party Votes and share Share RepublicanDick MonteithWon Republican 100,86249.4% DemocraticDan McCorquodale(incumbent) Democratic 96,54247.3% LibertarianLinda Marie Degroat Libertarian 6,5953.2% - Votes for listed candidates
- 180,769
- Election day
- November 6, 1990
- District map
- Older district map (1984 to 1991)
California Senate District 12, 1970 to 2022, 1990, every candidate Candidate Party Votes and share Share DemocraticDan McCorquodaleWon(incumbent) Democratic 106,85759.1% RepublicanLori Kennedy Republican 73,91240.9% - Votes for listed candidates
- 162,375
- Election day
- November 4, 1986
- District map
- Older district map (1984 to 1991)
California Senate District 12, 1970 to 2022, 1986, every candidate Candidate Party Votes and share Share DemocraticDan McCorquodaleWon(incumbent) Democratic 90,91156.0% RepublicanTom Legan Republican 71,46444.0% - Votes for listed candidates
- 164,397
- Election day
- November 2, 1982
- District map
- Older district map (1982 to 1983)
California Senate District 12, 1970 to 2022, 1982, every candidate Candidate Party Votes and share Share DemocraticDan McCorquodaleWon Democratic 79,45748.3% RepublicanDan Okeefe Republican 76,32746.4% LibertarianJim Wilson Libertarian 8,6135.2% - Votes for listed candidates
- 158,539
- Election day
- November 7, 1978
- District map
- Older district map (1974 to 1981)
California Senate District 12, 1970 to 2022, 1978, every candidate Candidate Party Votes and share Share DemocraticJerry SmithWon(incumbent) Democratic 96,89761.1% RepublicanClark L. Bradley Republican 61,64238.9% - Votes for listed candidates
- 155,245
- Election day
- November 4, 1974
- District map
- Older district map (1974 to 1981)
California Senate District 12, 1970 to 2022, 1974, every candidate Candidate Party Votes and share Share DemocraticJerome SmithWon Democratic 85,60055.1% RepublicanClark L. Bradley(incumbent) Republican 66,14242.6% OtherWilliam Pollock Herrell Other 3,5032.3% - Votes for listed candidates
- 193,924
- Election day
- November 3, 1970
- District map
- Older district map (1966 to 1973)
California Senate District 12, 1970 to 2022, 1970, every candidate Candidate Party Votes and share Share DemocraticArlen GregorioWon Democratic 98,96451.0% RepublicanCarl A. Britichgi Republican 90,87446.9% OtherRobert W. Bullock Other 4,0862.1%
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
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: 2022.
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Cite this page
Election Wrld. (2026). California State Senate District 12, election results 1970 to 2022. https://www.electionwrld.com/ca/senate/12. Retrieved October 31, 2026.
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<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; 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:ca/sldu:12
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse)Data as of Oct 28, 2026