California's 18th State Assembly district is one of 80 California State Assembly districts. It is currently represented by Democrat Mia Bonta of Alameda after winning the special election. She is married to her predecessor and the state's 34th Attorney General, Rob Bonta.

District profile

The district encompasses the central East Bay, centered on the city of Oakland.

Alameda County – (28.83%) Alameda Oakland – (89.15%) Emeryville

Election results from statewide races

YearOfficeResults
2021GovernorNewsom 90 – 10%
SenatorPadilla 90.5 – 9.5%
2021RecallNo 88.9 – 11.1%
2020PresidentBiden 86.5 – 11.3%
2018GovernorNewsom 88.3 – 11.7%
SenatorFeinstein 58.9 – 41.1%
2016PresidentClinton 85.9 – 8.4%
SenatorHarris 78.7 – 21.3%
2014GovernorBrown 89.6 – 10.4%
2012PresidentObama 86.9 – 10.2%
SenatorFeinstein 89.5 – 10.5%

List of assembly members representing the district

Due to redistricting, the 18th district has been moved around different parts of the state. The current iteration resulted from the 2021 redistricting by the California Citizens Redistricting Commission.

Assembly membersPartyYears servedCounties representedNotes
Hugh McElroy LaRueDemocraticJanuary 3, 1883 – January 5, 1885Sacramento
Winfield J. DavisRepublicanJanuary 5, 1885 – January 3, 1887
Harry W. CarrollJanuary 3, 1887 – January 7, 1889
William M. PetrieJanuary 7, 1889 – January 5, 1891
Judson C. BrusieJanuary 5, 1891 – January 2, 1893
Owen WadeJanuary 2, 1893 – January 4, 1897Napa
Frank CoombsJanuary 4, 1897 – January 2, 1899
Owen WadeJanuary 2, 1899 – January 1, 1901
Edward L. WebberJanuary 1, 1901 – January 5, 1903
John M. HigginsJanuary 5, 1903 – January 2, 1905Sacramento
Frank J. O'BrienJanuary 2, 1905 – January 4, 1909
Eldridge Lafayette HawkJanuary 4, 1909 – January 2, 1911
John C. MarchJanuary 2, 1911 – January 6, 1913
Thomas D. JohnstonJanuary 6, 1913 – January 4, 1915Contra Costa
William R. SharkeyProgressiveJanuary 4, 1915 – January 8, 1917
William E. CalahanRepublicanJanuary 8, 1917 – December 25, 1919Died in office.
VacantDecember 25, 1919 – January 3, 1921
James N. LongRepublicanJanuary 3, 1921 – January 8, 1923
Thomas M. CarlsonJanuary 8, 1923 – January 5, 1925
Robert P. EasleyJanuary 5, 1925 – January 5, 1931
Edwin H. ZionJanuary 5, 1931 – January 2, 1933Stanislaus
Charles W. FisherJanuary 2, 1933 – January 4, 1937Alameda
Henry A. DannenbrinkDemocraticJanuary 4, 1937 – January 2, 1939
James H. PhillipsRepublicanJanuary 2, 1939 – January 4, 1943
Gardiner JohnsonJanuary 4, 1943 – January 6, 1947
Thomas W. CaldecottJanuary 6, 1947 – September 26, 1957Resigned from the State Assembly to become a judge.
VacantSeptember 26, 1957 – January 3, 1958
Don MulfordRepublicanJanuary 3, 1958 – January 7, 1963Sworn in after winning a special election.
Edward M. GaffneyDemocraticJanuary 7, 1963 – January 4, 1965San Francisco
Willie BrownJanuary 4, 1965 – November 30, 1974
Leo T. McCarthyDecember 2, 1974 – November 30, 1982
Alister McAlisterDecember 6, 1982 – November 30, 1986Alameda, Santa Clara
Delaine EastinDecember 1, 1986 – November 30, 1992
Johan KlehsDecember 7, 1992 – November 30, 1994Alameda
Michael SweenyDecember 5, 1994 – November 30, 1998
Ellen CorbettDecember 7, 1998 – November 30, 2004
Johan KlehsDecember 6, 2004 – November 30, 2006
Mary HayashiDecember 4, 2006 – November 30, 2012
Rob BontaDecember 3, 2012 – April 23, 2021Resigned from the State Assembly to become the Attorney General of California.
VacantApril 23, 2021 – September 7, 2021
Mia BontaDemocraticSeptember 7, 2021 – presentSworn in after winning special election.

Election results (1990–present)

Contents

  • 1990
  • 1992
  • 1994
  • 1996
  • 1998
  • 2000
  • 2002
  • 2004
  • 2006
  • 2008
  • 2010
  • 2012
  • 2014
  • 2016
  • 2018
  • 2020
  • 2021 (special)
  • 2022
  • 2024

2024

2024 California State Assembly 18th district election
Primary election
PartyCandidateVotes%
DemocraticMia Bonta (incumbent)73,15584.9
American IndependentAndre Sandford4,5825.3
RepublicanMindy Pechenuk4,3975.1
RepublicanCheyenne Kenney4,0124.7
Total votes86,146100.0
General election
DemocraticMia Bonta (incumbent)134,07380.3
American IndependentAndre Sandford32,98319.7
Total votes167,056100.0
Democratic hold

2022

2022 California State Assembly 18th district election
Primary election
PartyCandidateVotes%
DemocraticMia Bonta69,142100.0
RepublicanMindy Pechenuk (write-in)310.0
Total votes69,173100.0
General election
DemocraticMia Bonta120,86389.9
RepublicanMindy Pechenuk13,50410.1
Total votes134,367100.0
Democratic hold

2021 (special)

2021 California State Assembly 18th district special electionVacancy resulting from the resignation of Rob Bonta
Primary election
PartyCandidateVotes%
DemocraticMia Bonta22,55838.0
DemocraticJanani Ramachandran14,03623.7
DemocraticMalia Vella10,05316.9
RepublicanStephen Slauson5,7259.6
DemocraticVictor Aguilar3,9386.6
DemocraticJames Aguilar1,0391.8
DemocraticEugene Canson1,0291.7
No party preferenceJoel Britton7501.3
Total votes59,128100.0
General election
DemocraticMia Bonta43,76256.9
DemocraticJanani Ramachandran33,18143.1
Total votes76,943100.0
Democratic hold

2020

2020 California State Assembly 18th district election
Primary election
PartyCandidateVotes%
DemocraticRob Bonta (incumbent)118,30089.3
RepublicanStephen Slauson14,15810.7
Total votes132,458100.0
General election
DemocraticRob Bonta (incumbent)190,16887.6
RepublicanStephen Slauson26,94212.4
Total votes217,110100.0
Democratic hold

2018

2018 California State Assembly 18th district election
Primary election
PartyCandidateVotes%
DemocraticRob Bonta (incumbent)85,35489.0
RepublicanStephen Slauson10,54911.0
Total votes95,903100.0
General election
DemocraticRob Bonta (incumbent)150,86288.9
RepublicanStephen Slauson18,89411.1
Total votes184,754100.0
Democratic hold

2016

2016 California State Assembly 18th district election
Primary election
PartyCandidateVotes%
DemocraticRob Bonta (incumbent)98,20289.1
RepublicanRoseann Slonsky-Breault12,05710.9
Total votes110,259100.0
General election
DemocraticRob Bonta (incumbent)156,16387.0
RepublicanRoseann Slonsky-Breault23,27313.0
Total votes179,436100.0
Democratic hold

2014

2014 California State Assembly 18th district election
Primary election
PartyCandidateVotes%
DemocraticRob Bonta (incumbent)44,32185.8
RepublicanDavid Erlich7,35814.2
Total votes51,679100.0
General election
DemocraticRob Bonta (incumbent)88,24386.7
RepublicanDavid Erlich13,53713.3
Total votes101,780100.0
Democratic hold

2012

2012 California State Assembly 18th district election
Primary election
PartyCandidateVotes%
DemocraticRob Bonta23,00736.9
DemocraticAbel Guillen18,52129.7
DemocraticJoel Young11,68018.8
RepublicanRhonda Weber9,08214.6
Total votes62,290100.0
General election
DemocraticRob Bonta75,86550.5
DemocraticAbel Guillen74,42249.5
Total votes150,287100.0
Democratic hold

2010

2010 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticMary Hayashi (incumbent)85,23775.2
RepublicanMichael Havig28,12424.8
Total votes113,361100.0
Democratic hold

2008

2008 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticMary Hayashi (incumbent)115,78077.5
RepublicanLou Filipovich33,59622.5
Total votes149,376100.0
Democratic hold

2006

2006 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticMary Hayashi69,41167.8
RepublicanJill Buck32,89732.2
Total votes102,308100.0
Democratic hold

2004

2004 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticJohan Klehs (incumbent)106,63583.6
LibertarianRonald J. Colfer20,88816.4
No partyLou Filipovich (write-in)170.0
Total votes127,540100.0
Democratic hold

2002

2002 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticEllen M. Corbett (incumbent)60,62771.7
RepublicanJack Hovingh24,02828.3
Total votes84,655100.0
Democratic hold

2000

2000 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticEllen Corbett (incumbent)91,99175.4
RepublicanSyed Rifat Mahmood29,93624.6
Total votes121,927100.0
Democratic hold

1998

1998 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticEllen M. Corbett63,49165.8
RepublicanCarol Nowicki33,06034.2
Total votes96,551100.0
Democratic hold

1996

1996 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticMichael Sweeney (incumbent)89,122100.0
Total votes89,122100.0
Democratic hold

1994

1994 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticMichael Sweeney69,86369.7
RepublicanDon J. Grundmann30,31030.3
Total votes100,173100.0
Democratic hold

1992

1992 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticJohan Klehs (incumbent)87,97165.0
RepublicanDon J. Grundmann38,02728.1
LibertarianTerry L. Floyd9,2976.9
Total votes135,295100.0
Democratic hold

1990

1990 California State Assembly 18th district election
PartyCandidateVotes%
DemocraticDelaine Eastin (incumbent)65,654100.0
Total votes65,654100.0
Democratic hold

See also

External links