# California's 18th State Assembly district

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 the current State Attorney General Rob Bonta, who was the former representative of the district.

## District profile

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

## Election results from statewide races

| Year | Office | Results |
| 2021 | Governor | Newsom 90 – 10% |
| 2021 | Senator | Padilla 90.5 – 9.5% |
| 2021 | Recall | No 88.9 – 11.1% |
| 2020 | President | 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 |
| Hugh McElroy LaRue | Democratic | January 3, 1883 – January 5, 1885 | Sacramento | |
| Winfield J. Davis | Republican | January 5, 1885 – January 3, 1887 | Sacramento | |
| Harry W. Carroll | Republican | January 3, 1887 – January 7, 1889 | Sacramento | |
| William M. Petrie | Republican | January 7, 1889 – January 5, 1891 | Sacramento | |
| Judson C. Brusie | Republican | January 5, 1891 – January 2, 1893 | Sacramento | |
| Owen Wade | Republican | January 2, 1893 – January 4, 1897 | Napa | |
| Frank Coombs | Republican | January 4, 1897 – January 2, 1899 | Napa | |
| Owen Wade | Republican | January 2, 1899 – January 1, 1901 | Napa | |
| Edward L. Webber | Republican | January 1, 1901 – January 5, 1903 | Napa | |
| John M. Higgins | Republican | January 5, 1903 – January 2, 1905 | Sacramento | |
| Frank J. O'Brien | Republican | January 2, 1905 – January 4, 1909 | Sacramento | |
| Eldridge Lafayette Hawk | Republican | January 4, 1909 – January 2, 1911 | Sacramento | |
| John C. March | Republican | January 2, 1911 – January 6, 1913 | Sacramento | |
| Thomas D. Johnston | Republican | January 6, 1913 – January 4, 1915 | Contra Costa | |
| William R. Sharkey | Progressive | January 4, 1915 – January 8, 1917 | Contra Costa | |
| William E. Calahan | Republican | January 8, 1917 – December 25, 1919 | Contra Costa | Died in office. |
| James N. Long | Republican | January 3, 1921 – January 8, 1923 | Contra Costa | |
| Thomas M. Carlson | Republican | January 8, 1923 – January 5, 1925 | Contra Costa | |
| Robert P. Easley | Republican | January 5, 1925 – January 5, 1931 | Contra Costa | |
| Edwin H. Zion | Republican | January 5, 1931 – January 2, 1933 | Stanislaus | |
| Charles W. Fisher | Republican | January 2, 1933 – January 4, 1937 | Alameda | |
| Henry A. Dannenbrink | Democratic | January 4, 1937 – January 2, 1939 | Alameda | |
| James H. Phillips | Republican | January 2, 1939 – January 4, 1943 | Alameda | |
| Gardiner Johnson | Republican | January 4, 1943 – January 6, 1947 | Alameda | |
| Thomas W. Caldecott | Republican | January 6, 1947 – September 26, 1957 | Alameda | Resigned from the Assembly to become a judge |
| Don Mulford | Republican | January 3, 1958 – January 7, 1963 | Alameda | Sworn in after winning a special election. |
| Edward M. Gaffney | Democratic | January 7, 1963 – January 4, 1965 | San Francisco | |
| Willie Brown | Democratic | January 4, 1965 – November 30, 1974 | San Francisco | |
| Leo T. McCarthy | Democratic | December 2, 1974 – November 30, 1982 | San Francisco | |
| Alister McAlister | Democratic | December 6, 1982 – November 30, 1986 | Alameda, Santa Clara | |
| Delaine Eastin | Democratic | December 1, 1986 – November 30, 1992 | Alameda, Santa Clara | |
| Johan Klehs | Democratic | December 7, 1992 – November 30, 1994 | Alameda | |
| Michael Sweeny | Democratic | December 5, 1994 – November 30, 1998 | Alameda | |
| Ellen Corbett | Democratic | December 7, 1998 – November 30, 2004 | Alameda | |
| Johan Klehs | Democratic | December 6, 2004 – November 30, 2006 | Alameda | |
| Mary Hayashi | Democratic | December 4, 2006 – November 30, 2012 | Alameda | |
| Rob Bonta | Democratic | December 3, 2012 – April 23, 2021 | Alameda | Resigned from the Assembly to become State Attorney General |
| Mia Bonta | Democratic | September 7, 2021 – present | Alameda | Sworn in after winning special election. |

## Contents

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

### 2022

2022 California State Assembly election :
| Primary election |||||
| Party | Party | Candidate | Votes | % |
| | Democratic | Mia Bonta | 69,142 | 100.00 |
| | Republican | Mindy Pechenuk (write-in) | 31 | 0.00 |
| Total votes | Total votes | Total votes | 69,173 | 100.00 |
| General election |||||
| | Democratic | Mia Bonta | 120,863 | 89.90 |
| | Republican | Mindy Pechenuk | 13,504 | 10.10 |
| Total votes | Total votes | Total votes | 134,367 | 100.00 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 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 | 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 | Total votes | Total votes | 59,328 | 100.0 |
| General election |||||
| | Democratic | Mia Bonta | 43,460 | 56.8 |
| | Democratic | Janani Ramachandran | 33,012 | 43.2 |
| Total votes | Total votes | Total votes | 76,472 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2020

2020 California State Assembly election :
| Primary election |||||
| Party | Party | Candidate | Votes | % |
| | Democratic | Rob Bonta (incumbent) | 118,300 | 89.3 |
| | Republican | Stephen Slauson | 14,158 | 10.7 |
| Total votes | Total votes | 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 | Total votes | Total votes | 217,110 | 100.0% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2018

California State Assembly election, 2018 :
| Primary election |||||
| Party | Party | Candidate | Votes | % |
| | Democratic | Rob Bonta (incumbent) | 85,354 | 89.0 |
| | Republican | Stephen Slauson | 10,549 | 11.0 |
| Total votes | Total votes | 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 | Total votes | Total votes | 184,754 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2016

California State Assembly election, 2016 :
| Primary election |||||
| Party | Party | Candidate | Votes | % |
| | Democratic | Rob Bonta (incumbent) | 98,202 | 89.1 |
| | Republican | Roseann Slonsky-Breault | 12,057 | 10.9 |
| Total votes | Total votes | 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 | Total votes | Total votes | 179,436 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2014

California State Assembly election, 2014 :
| Primary election |||||
| Party | Party | Candidate | Votes | % |
| | Democratic | Rob Bonta (incumbent) | 44,321 | 85.8 |
| | Republican | David Erlich | 7,358 | 14.2 |
| Total votes | Total votes | 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 | Total votes | Total votes | 101,780 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2012

California State Assembly election, 2012 :
| Primary election |||||
| Party | 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 | Total votes | Total votes | 62,290 | 100.0 |
| General election |||||
| | Democratic | Rob Bonta | 75,865 | 50.5 |
| | Democratic | Abel Guillen | 74,422 | 49.5 |
| Total votes | Total votes | Total votes | 150,287 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2010

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

### 2008

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

### 2006

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

### 2004

2004 California State Assembly election :
| Party | 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 | Total votes | Total votes | 127,540 | 100.00 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2002

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

### 2000

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

### 1998

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

### 1996

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

### 1994

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

### 1992

1992 California State Assembly election :
| Party | 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 | Invalid or blank votes | Invalid or blank votes | 14,361 | 9.60 |
| Total votes | Total votes | Total votes | 149,656 | 100.00 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |