California's 18th State Assembly district

California's 18th State Assembly district
California's 18th State Assembly district
Current assemblymember
	Mia Bonta ; D–Alameda
Population (2010); • Voting age; • Citizen voting age	469,665; 365,624; 281,791
Demographics	23.96% White ; 23.32% Black ; 26.30% Latino ; 23.50% Asian ; 0.56% Native American ; 0.70% Hawaiian/Pacific Islander ; 0.33% other; 1.33% remainder of multiracial;
Registered voters	270,094
Registration	64.05% Democratic ; 6.82% Republican ; 24.79% No party preference

Last updated January 19, 2024

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.

District profile

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

Alameda County – 31.1%

Election results from statewide races

Year	Office	Results
2021	Recall	No 88.9 – 11.1%
2020	President ^[2]	Biden 86.5 – 11.3%
2018	Governor	Newsom 88.3 – 11.7%
2018	Senator	Feinstein 58.9 – 41.1%
2016	President	Clinton 85.9 – 8.4%
2016	Senator	Harris 78.7 – 21.3%
2014	Governor	Brown 89.6 – 10.4%
2012	President	Obama 86.9 – 10.2%
2012	Senator	Feinstein 89.5 – 10.5%

List of assembly members

Due to redistricting, the 18th district has been moved around different parts of the state. The current iteration resulted from the 2011 redistricting by the California Citizens Redistricting Commission.

Assembly members	Party	Years served	Counties represented	Notes
Winfield J. Davis	Republican	January 5, 1885 - January 3, 1887	Sacramento
Harry W. Carroll		January 3, 1887 - January 7, 1889
William M. Petrie		January 7, 1889 - January 5, 1891
Judson C. Brusie		January 5, 1891 - January 2, 1893
Owen Wade		January 2, 1893 - January 4, 1897	Napa
Frank Coombs		January 4, 1897 - January 2, 1899
Owen Wade		January 2, 1899 - January 1, 1901
Edward L. Webber		January 1, 1901 - January 5, 1903
John M. Higgins		January 5, 1903 - January 2, 1905	Sacramento
Frank J. O'Brien		January 2, 1905 - January 4, 1909
Eldridge Lafayette Hawk		January 4, 1909 - January 2, 1911
John C. March		January 2, 1911 - January 6, 1913
Thomas D. Johnston		January 6, 1913 - January 4, 1915	Contra Costa
William R. Sharkey	Progressive	January 4, 1915 - January 8, 1917
William E. Calahan	Republican	January 8, 1917 - December 25, 1919		Died in office.^[3]
James N. Long		January 3, 1921 - January 8, 1923
Thomas M. Carlson		January 8, 1923 - January 5, 1925
Robert P. Easley		January 5, 1925 - January 5, 1931
Edwin H. Zion		January 5, 1931 - January 2, 1933	Stanislaus
Charles W. Fisher		January 2, 1933 - January 4, 1937	Alameda
Henry A. Dannenbrink	Democratic	January 4, 1937 - January 2, 1939
James H. Phillips	Republican	January 2, 1939 - January 4, 1943
Gardiner Johnson		January 4, 1943 - January 6, 1947
Thomas W. Caldecott		January 6, 1947 - September 26, 1957		Resigned from the Assembly to become a judge^[4]
Don Mulford		January 3, 1958 - January 7, 1963		Sworn in after winning a special election.^[5]
Edward M. Gaffney	Democratic	January 7, 1963 - January 4, 1965	San Francisco
Willie Brown		January 4, 1965 - November 30, 1974
Leo T. McCarthy		December 2, 1974 - November 30, 1982
Alister McAlister		December 6, 1982 - November 30, 1986	Alameda, Santa Clara
Delaine Eastin		December 1, 1986 - November 30, 1992	Alameda, Santa Clara
Johan Klehs		December 7, 1992 - November 30, 1994	Alameda
Michael Sweeny		December 5, 1994 - November 30, 1998
Ellen Corbett		December 7, 1998 - November 30, 2004
Johan Klehs		December 6, 2004 - November 30, 2006
Mary Hayashi		December 4, 2006 - November 30, 2012
Rob Bonta		December 3, 2012 - April 23, 2021		Resigned from the Assembly to become State Attorney General
Mia Bonta		September 7, 2021 – present		Sworn in after winning special election.

Election results (1992–present)

2021 (special)

Primary was June 29, 2021; Special (label as General) on August 31, 2021.

California's 18 State Assembly district special election, 2021
Primary election
Party		Candidate	Votes	%
	Democratic	Mia Bonta	22,558	38.0
	Democratic	Janani Ramachandran	14,036	23.7
	Democratic	Malia Vella	10,053	16.9
	Republican	Stephen Slauson	5,725	9.6
	Democratic	Victor Aguilar	3,938	6.6
	Democratic	James Aguilar	1,039	1.8
	Democratic	Eugene Canson	1,029	1.7
	No party preference	Joel Britton	750	1.3
	N/A	Nelsy Batista (write-in)	13	0.0
	N/A	Other write-in candidates	187	0.3
Total votes			59,328	100.0
General election
	Democratic	Mia Bonta	43,460	56.8
	Democratic	Janani Ramachandran	33,012	43.2
Total votes			76,472	100.0
	Democratic hold

2020

2020 California State Assembly election
Primary election
Party		Candidate	Votes	%
	Democratic	Rob Bonta (incumbent)	118,300	89.3
	Republican	Stephen Slauson	14,158	10.7
Total votes			132,458	100.0
General election
	Democratic	Rob Bonta (incumbent)	190,168	87.6%
	Republican	Stephen Slauson	26,942	12.4%
Total votes			217,110	100.0%
	Democratic hold

2018

California State Assembly election, 2018
Primary election
Party		Candidate	Votes	%
	Democratic	Rob Bonta (incumbent)	85,354	89.0
	Republican	Stephen Slauson	10,549	11.0
Total votes			95,903	100.0
General election
	Democratic	Rob Bonta (incumbent)	150,862	88.9
	Republican	Stephen Slauson	18,894	11.1
Total votes			184,754	100.0
	Democratic hold

2016

California State Assembly election, 2016
Primary election
Party		Candidate	Votes	%
	Democratic	Rob Bonta (incumbent)	98,202	89.1
	Republican	Roseann Slonsky-Breault	12,057	10.9
Total votes			110,259	100.0
General election
	Democratic	Rob Bonta (incumbent)	156,163	87.0
	Republican	Roseann Slonsky-Breault	23,273	13.0
Total votes			179,436	100.0
	Democratic hold

2014

California State Assembly election, 2014
Primary election
Party		Candidate	Votes	%
	Democratic	Rob Bonta (incumbent)	44,321	85.8
	Republican	David Erlich	7,358	14.2
Total votes			51,679	100.0
General election
	Democratic	Rob Bonta (incumbent)	88,243	86.7
	Republican	David Erlich	13,537	13.3
Total votes			101,780	100.0
	Democratic hold

2012

California State Assembly election, 2012
Primary election
Party		Candidate	Votes	%
	Democratic	Rob Bonta	23,007	36.9
	Democratic	Abel Guillen	18,521	29.7
	Democratic	Joel Young	11,680	18.8
	Republican	Rhonda Weber	9,082	14.6
Total votes			62,290	100.0
General election
	Democratic	Rob Bonta	75,865	50.5
	Democratic	Abel Guillen	74,422	49.5
Total votes			150,287	100.0
	Democratic hold

2010

2010 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Mary Hayashi (incumbent)	85,237	75.2
	Republican	Michael Havig	28,124	24.8
Total votes			113,361	100.0
	Democratic hold

2008

2008 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Mary Hayashi (incumbent)	115,780	77.51
	Republican	Lou Filipovich	33,596	22.49
Total votes			149,376	100.00
Turnout				69.33
	Democratic hold

2006

2006 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Mary Hayashi	69,411	67.85
	Republican	Jill Buck	32,897	32.15
Total votes			102,308	100.00
Turnout				55.96
	Democratic hold

2004

2004 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Johan Klehs (incumbent)	106,635	83.61
	Libertarian	Ronald J. Colfer	20,888	16.38
	Independent	Lou Filipovich (write-in)	17	0.00
Total votes			127,540	100.00
	Democratic hold

2002

2002 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Ellen M. Corbett (incumbent)	60,025	71.56
	Republican	Jack Hovingh	23,851	28.44
Invalid or blank votes			7,280	7.99
Total votes			91,156	100.00
	Democratic hold

2000

2000 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Ellen Corbett (incumbent)	91,991	75.45
	Republican	Syed Rifat Mahmood	29,936	24.55
Invalid or blank votes			13,215	9.78
Total votes			135,142	100.00
	Democratic hold

1998

1998 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Ellen M. Corbett	63,491	65.76
	Republican	Carol Nowicki	33,060	34.24
Invalid or blank votes			10,400	9.72
Total votes			106,951	100.00
	Democratic hold

1996

1996 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Michael Sweeney (incumbent)	89,122	100.00
Invalid or blank votes			36,608	30.23
Total votes			125,730	100.00
	Democratic hold

1994

1994 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Michael Sweeney	69,863	69.74
	Republican	Don J. Grundmann	30,310	30.26
Invalid or blank votes			11,363	10.19
Total votes			111,536	100.00
	Democratic hold

1992

1992 California State Assembly election
Party		Candidate	Votes	%
	Democratic	Johan Klehs (incumbent)	87,971	65.02
	Republican	Don J. Grundmann	38,027	28.11
	Libertarian	Terry L. Floyd	9,297	6.87
Invalid or blank votes			14,361	9.60
Total votes			149,656	100.00
	Democratic hold

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References

1 2 3 4 "Citizens Redistricting Commission Final Report, 2011" (PDF).
↑ "2020 Presidential by Legislative District & Most Recent Election Result". CNalysis. Retrieved June 9, 2021.
↑ "William Calahan" (PDF). clerk.assembly.ca.gov.
↑ "Thomas W. Caldecott". joincalifornia.com.
↑ "Don Mulford Oath of Office" (PDF). clerk.assembly.ca.gov.

External links

District map from the California Citizens Redistricting Commission

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[population-1] 1 2 3 4 "Citizens Redistricting Commission Final Report, 2011" (PDF).

[2] "2020 Presidential by Legislative District & Most Recent Election Result". CNalysis. Retrieved June 9, 2021.

[3] "William Calahan" (PDF). clerk.assembly.ca.gov.

[4] "Thomas W. Caldecott". joincalifornia.com.

[5] "Don Mulford Oath of Office" (PDF). clerk.assembly.ca.gov.

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