# California's 18th congressional district

California's 18th congressional district is a congressional district located in the U.S. state of California. The district is currently represented by Democrat Zoe Lofgren. Since the 2022 election, the district is landlocked and includes all of San Benito County and parts of Santa Clara and Monterey counties, including Salinas, Hollister, Watsonville, Gilroy, Soledad, and downtown and eastern San Jose.
Due to the presence of Silicon Valley, the district had a median household income of $149,375, the second highest of any congressional district in the country. After redistricting, the district picked up agricultural areas of Monterey County, and its median household income dropped substantially, to $90,456.

## History
### 2020 redistricting

Following the 2020 census and the subsequent 2020 United States redistricting cycle, California lost a congressional district, leading to significant changes across California's districts. Most of the area previously part of the 18th district was split into the new 16th district and 19th district. The 18th district was moved to cover the Salinas Valley in Monterey County and the downtown and east side of San Jose. With the changes, the 18th became a Latino majority district.

### 2010 redistricting

Following the 2010 census and the subsequent 2010 United States redistricting cycle, California's 18th congressional district was redrawn by the California Citizens Redistricting Commission. Cities and CDPs in the district include Palo Alto, Stanford, Los Altos, Woodside, Mountain View, Los Altos Hills, Campbell, Saratoga, Los Gatos, and Scotts Valley; most of Menlo Park and Redwood City; and part of San Jose.

### 2000 redistricting

Following the 2000 census and the subsequent 2000 United States redistricting cycle, California's congressional districts were redrawn by the California State Legislature. From 2003 to 2013, the district was located in the San Joaquin Valley. It included Merced County and portions of San Joaquin, Stanislaus, Madera, and Fresno counties. Cities in the district included Modesto, most of Stockton, Ceres, Atwater, Merced, and Los Banos.

## Recent election results from statewide races

| Year | Office | Results |
| 2008 | President | Obama 71% - 28% |
| 2010 | Governor | Brown 63% - 32% |
| 2010 | Lt. Governor | Newsom 57% - 34% |
| 2010 | Secretary of State | Bowen 62% - 28% |
| 2010 | Attorney General | Harris 57% - 33% |
| 2010 | Treasurer | Lockyer 66% - 26% |
| 2010 | Controller | Chiang 62% - 27% |
| 2012 | President | Obama 74% - 26% |
| 2014 | Governor | Brown 72% - 28% |
| 2016 | President | Clinton 71% - 23% |
| 2018 | Governor | Newsom 69% - 31% |
| 2018 | Attorney General | Becerra 71% - 29% |
| 2020 | President | Biden 71% - 27% |
| 2022 | Senate (Reg.) | Padilla 68% - 32% |
| 2022 | Governor | Newsom 65% - 35% |
| 2022 | Lt. Governor | Kounalakis 66% - 34% |
| 2022 | Secretary of State | Weber 66% - 34% |
| 2022 | Attorney General | Bonta 66% - 34% |
| 2022 | Treasurer | Ma 65% - 35% |
| 2022 | Controller | Cohen 63% - 37% |
| 2024 | President | Harris 63% - 34% |
| 2024 | Senate (Reg.) | Schiff 65% - 35% |

## Composition

| FIPS County Code | County | Seat | Population |
| 53 | Monterey | Salinas | 430,723 |
| 69 | San Benito | Hollister | 68,175 |
| 81 | San Mateo | Redwood City | 737,888 |
| 85 | Santa Clara | San Jose | 1,877,592 |
| 87 | Santa Cruz | Santa Cruz | 261,547 |
Under the 2020 redistricting, California's 18th congressional district was shifted geographically to cover the Salinas Valley. It encompasses San Benito County, the southernmost point of Santa Cruz County, and the interiors of Santa Clara and Monterey Counties. The area in Santa Cruz County includes most of the city of Watsonville; and the census-designated places Interlaken, Amesti, and Freedom. The area in Santa Clara County includes the center of the city of San Jose; part of the San Jose district of Alum Rock; the cities of Morgan Hill and Gilroy; and the census-designated places East Foothills and San Martin. The area in Monterey County includes the cities of Salinas, Soledad, Greenfield, King City, and Gonzales; the north side of the census-designated place Prunedale; and the census-designated places Aromas (shared with San Benito County), Pajaro, Las Lomas, Boronda, Chualar, Pine Canyon, San Lucas, San Ardo, Lockwood, and Fort Hunter Liggett.
Santa Cruz County is split between this district and the 19th district. They are partitioned by Pajaro River, Highway 129, W Beach St, Lee Rd, Highway 1, Harkins Slough Rd, Harkins Slough, Old Adobe Rd, Corralitos Creek, Varin Rd, Pioneer Rd, Green Valley Rd, Casserly Rd, Mt Madonna Rd.
Santa Clara County is split between this district, the 19th district, the 16th district, and the 17th district. The 18th, 16th, and 19th are partitioned by Bella Vista Ln, Bodfish Creek, Burchell Rd, Bluebell Dr, Day Rd, Highway G8, W San Martin Ave, Santa Teresa Blvd, Sunnyside Ave, Morgan Hill City Limits, Hale Ave, Tilton Ave, Monterey Rd, Highway 101, Coyote Rd, Anderson Lake, Las Animas Rd, Metcalf Rd, Yerba Buena Creek, Old Yerba Buena Rd, Aborn Rd, Quincy Rd, Norwood Ave, Murillo Ave, Pleasant Acres Dr, Westview Dr, Pleasant Knoll Dr, Guluzzo Dr, Flint Ave, Marten Ave, Coldwater Dr, Ocala Ave, Wonderama Dr, Cunningham Ave, Swift Ave, Highway 101, Story Rd, Monterey Rd, Highway 87, Highway 280, Highway 880. The 18th and 17th are partitioned by Steven's Creek Blvd, Di Salvo Ave, Bellerose Dr, Forest Ave, Wabash Ave, W San Carlos St, Race St, The Alameda, University Ave, Elm St, Highway 82, Newhall St, Morse St, Idaho St, Alameda Ct, Sherwood Ave, Hamline St, Highway 880, Highway 101, McKee Rd, Toyon Ave, Penitencia Creek Rd, Canon Vista Ave, Crothers Rd, Alum Rock Park, Sierra Rd, Felter Rd, Weller Rd.
Monterey County is split between this district and the 19th district. They are partitioned by Union Pacific, Highway G12, Elkhorn Rd, Echo Valley Rd, Maher Rd, Maher Ct, La Encina Dr, Crazy Horse Canyon Rd, San Juan Grade Rd, Highway 101, Espinosa Rd, Castroville Blvd, Highway 156, Highway 1, Tembladero Slough, Highway 183, Cooper Rd, Blanco Rd, Salinas River, Davis Rd, Hitchcock Rd, Highway 68, E Blanco Rd, Nutting St, Abbott St, Highway G17, Limekiln Creek, Likekiln Rd, Rana Creek, Tularcitos Creek, Highway G16, Tassajara Rd, Camp Creek, Lost Valley Creek, Lost Valley Conn, N Coast Rdg, 2 Central Coa, Cone Peak Rd, Nacimiento Fergusson Rd, Los Bueyes Creek, and the Monterey County Southern border.

### Cities and CDPs with 10,000 or more people

* San Jose – 971,233
* Salinas – 163,542
* Gilroy – 58,101
* Watsonville – 52,590
* Morgan Hill – 45,483
* Hollister – 41,678
* Soledad – 24,925
* Greenfield – 18,937
* Prunedale – 18,885
* Greenfield – 17,516
* King City – 13,332
* Alum Rock – 12,042

### 2,500 – 10,000 people

* Gonzales – 8,647
* Castroville – 7,515
* Interlaken – 7,368
* San Martin – 7,027
* East Foothills – 6,803
* Freedom – 3,835
* Ridgemark – 3,212
* Las Lomas – 3,046
* Pajaro – 2,882
* Aromas – 2,708
* Amesti – 2,637

## List of members representing the district

| Member | Party | Dates | Cong ress(es) | Electoral history | Counties |
| District created March 4, 1933 ||||||
| John H. Burke (Long Beach) | Democratic | March 4, 1933 – January 3, 1935 | 73rd | Elected in 1932. Retired. | 1933–1963 Los Angeles County |
| Byron N. Scott (Long Beach) | Democratic | January 3, 1935 – January 3, 1939 | 74th 75th | Elected in 1934. Re-elected in 1936. Lost re-election. | 1933–1963 Los Angeles County |
| Thomas M. Eaton (Long Beach) | Republican | January 3, 1939 – September 16, 1939 | 76th | Elected in 1938. Died. | 1933–1963 Los Angeles County |
| Vacant | Vacant | September 16, 1939 – January 3, 1941 | 76th | | 1933–1963 Los Angeles County |
| William Ward Johnson (Long Beach) | Republican | January 3, 1941 – January 3, 1945 | 77th 78th | Elected in 1940. Re-elected in 1942. Lost re-election. | 1933–1963 Los Angeles County |
| Clyde Doyle (Long Beach) | Democratic | January 3, 1945 – January 3, 1947 | 79th | Elected in 1944. Lost re-election. | 1933–1963 Los Angeles County |
| Willis W. Bradley (Long Beach) | Republican | January 3, 1947 – January 3, 1949 | 80th | Elected in 1946. Lost re-election. | 1933–1963 Los Angeles County |
| Clyde Doyle (Long Beach) | Democratic | January 3, 1949 – January 3, 1953 | 81st 82nd | Elected again in 1948. Re-elected in 1950. Redistricted to the 23rd district. | 1933–1963 Los Angeles County |
| Craig Hosmer (Long Beach) | Republican | January 3, 1953 – January 3, 1963 | 83rd 84th 85th 86th 87th | Elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. Redistricted to the 32nd district. | 1933–1963 Los Angeles County |
| Harlan Hagen (Hanford) | Democratic | January 3, 1963 – January 3, 1967 | 88th 89th | Redistricted from the 14th district and re-elected in 1962. Re-elected in 1964. Lost re-election. | 1963–1967 Kern County, Kings County, Tulare County |
| Bob Mathias (Tulare) | Republican | January 3, 1967 – January 3, 1975 | 90th 91st 92nd 93rd | Elected in 1966. Re-elected in 1968. Re-elected in 1970. Re-elected in 1972. Redistricted to the 17th district and lost re-election. | 1967–1973 Kern County, Tulare County |
| Bob Mathias (Tulare) | Republican | January 3, 1967 – January 3, 1975 | 90th 91st 92nd 93rd | Elected in 1966. Re-elected in 1968. Re-elected in 1970. Re-elected in 1972. Redistricted to the 17th district and lost re-election. | 1973–1975 Amador County, Calaveras County, Inyo County, Kern County (sliver in north), Madera County, Mariposa County, Mono County, Tulare County, Tuolumne County |
| William M. Ketchum (Bakersfield) | Republican | January 3, 1975 – June 24, 1978 | 94th 95th | Redistricted from the 36th district and re-elected in 1974. Re-elected in 1976. Died. | Inyo County, Kern County, northern Los Angeles County, Tulare County |
| Vacant | Vacant | June 24, 1978 – January 3, 1979 | 95th | | Inyo County, Kern County, northern Los Angeles County, Tulare County |
| Bill Thomas (Bakersfield) | Republican | January 3, 1979 – January 3, 1983 | 96th 97th | Elected in 1978. Re-elected in 1980. Redistricted to the 20th district. | Inyo County, Kern County, northern Los Angeles County, Tulare County |
| Richard Lehman (Fresno) | Democratic | January 3, 1983 – January 3, 1993 | 98th 99th 100th 101st 102nd | Elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. Redistricted to the 19th district. | 1983–1993 Calaveras County, Fresno County (Fresno city), Madera County, Mono County, eastern San Joaquin County, Tuolumne County |
| Gary Condit (Ceres) | Democratic | January 3, 1993 – January 3, 2003 | 103rd 104th 105th 106th 107th | Redistricted from the 15th district and re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Lost renomination. | 1993–2003 Northwestern Fresno County, western Madera County, Merced County, southwestern San Joaquin County, Stanislaus County |
| Dennis Cardoza (Atwater) | Democratic | January 3, 2003 – August 14, 2012 | 108th 109th 110th 111th 112th | Elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Resigned to become a lobbyist. | 2003–2013 Small part of western Fresno County, Merced County, San Joaquin County (Stockton), western Stanislaus County |
| Vacant | Vacant | August 14, 2012 – January 3, 2013 | 112th | Redistricted to the 10th district | 2003–2013 Small part of western Fresno County, Merced County, San Joaquin County (Stockton), western Stanislaus County |
| Anna Eshoo (Atherton) | Democratic | January 3, 2013 – January 3, 2023 | 113th 114th 115th 116th 117th | Redistricted from the 14th district and re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Redistricted to the 16th district. | 2013–2023 Portions of San Mateo, Santa Clara, and Santa Cruz |
| Zoe Lofgren (San Jose) | Democratic | January 3, 2023 – present | 118th 119th | Redistricted from the 19th district and re-elected in 2022. Re-elected in 2024. | 2023–present Much of Santa Clara County, including most of the city of San Jose |

## Election results
### 1932

United States House of Representatives elections, 1932 :
| Party | Party | Candidate | Votes | % |
| | Democratic | John H. Burke | 48,179 | 53.3 |
| | Republican | Robert Henderson | 33,817 | 37.4 |
| | Independent | William E. Hinshaw | 8,399 | 9.3 |
| Total votes | Total votes | Total votes | 90,395 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) |

### 1934

United States House of Representatives elections, 1934 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Byron N. Scott | 52,377 | 56.3 |
| | Republican | William Brayton | 40,179 | 43.2 |
| | Communist | Clyde Champion | 507 | 0.5 |
| Total votes | Total votes | Total votes | 93,063 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1936

United States House of Representatives elections, 1936 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Byron N. Scott (incumbent) | 61,415 | 59 |
| | Republican | James F. Collins | 42,748 | 41 |
| Total votes | Total votes | Total votes | 134,163 | 100 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1938

United States House of Representatives elections, 1938 :
| Party | Party | Candidate | Votes | % |
| | Republican | Thomas M. Eaton | 52,216 | 48.6 |
| | Democratic | Byron N. Scott (incumbent) | 51,874 | 48.3 |
| | Progressive | Solomon Carr | 3,384 | 3.1 |
| Total votes | Total votes | Total votes | 107,474 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 1940

United States House of Representatives elections, 1940 :
| Party | Party | Candidate | Votes | % |
| | Republican | William Ward Johnson (inc.) | 73,932 | 54.4 |
| | Democratic | Byron N. Scott | 60,764 | 44.7 |
| | Communist | George R. Ashby | 1,355 | 0.9 |
| Total votes | Total votes | Total votes | 136,051 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1942

United States House of Representatives elections, 1942 :
| Party | Party | Candidate | Votes | % |
| | Republican | William Ward Johnson (inc.) | 53,136 | 56.8 |
| | Democratic | Francis H. Gentry | 40,339 | 43.2 |
| Total votes | Total votes | Total votes | 93,475 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1944

United States House of Representatives elections, 1944 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Clyde Doyle | 95,090 | 55.7 |
| | Republican | William Ward Johnson (inc.) | 75,749 | 44.3 |
| Total votes | Total votes | Total votes | 170,839 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 1946

United States House of Representatives elections, 1946 :
| Party | Party | Candidate | Votes | % |
| | Republican | Willis W. Bradley | 67,363 | 52.8 |
| | Democratic | Clyde Doyle (incumbent) | 60,218 | 47.2 |
| Total votes | Total votes | Total votes | 127,581 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 1948

United States House of Representatives elections, 1948 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Clyde Doyle | 105,687 | 51.1 |
| | Republican | Willis W. Bradley (incumbent) | 92,721 | 44.9 |
| | Progressive | Stanley Moffatt | 8,232 | 4.0 |
| Total votes | Total votes | Total votes | 206,640 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 1950

United States House of Representatives elections, 1950 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Clyde Doyle (incumbent) | 97,177 | 50.5 |
| | Republican | Craig Hosmer | 95,308 | 49.5 |
| Total votes | Total votes | Total votes | 192,485 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1952

United States House of Representatives elections, 1952 :
| Party | Party | Candidate | Votes | % |
| | Republican | Craig Hosmer | 90,438 | 55.5 |
| | Democratic | Joseph M. Kennick | 72,457 | 44.5 |
| Total votes | Total votes | Total votes | 162,895 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican win (new seat) | Republican win (new seat) | Republican win (new seat) | Republican win (new seat) |

### 1954

United States House of Representatives elections, 1954 :
| Party | Party | Candidate | Votes | % |
| | Republican | Craig Hosmer (incumbent) | 71,731 | 55 |
| | Democratic | Joseph M. Kennick | 58,647 | 45 |
| Total votes | Total votes | Total votes | 130,378 | 100 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1956

United States House of Representatives elections, 1956 :
| Party | Party | Candidate | Votes | % |
| | Republican | Craig Hosmer (incumbent) | 103,108 | 59.3 |
| | Democratic | Raymond C. "Ray" Simpson | 70,911 | 40.7 |
| Total votes | Total votes | Total votes | 174,019 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1958

United States House of Representatives elections, 1958 :
| Party | Party | Candidate | Votes | % |
| | Republican | Craig Hosmer (incumbent) | 95,682 | 60 |
| | Democratic | Harry S. May | 63,684 | 40 |
| Total votes | Total votes | Total votes | 159,366 | 100 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1960

United States House of Representatives elections, 1960 :
| Party | Party | Candidate | Votes | % |
| | Republican | Craig Hosmer (incumbent) | 129,851 | 70 |
| | Democratic | D. Patrick Ahern | 55,735 | 30 |
| Total votes | Total votes | Total votes | 185,586 | 100 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1962

United States House of Representatives elections, 1962 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harlan Hagen (incumbent) | 91,684 | 58.9 |
| | Republican | G. Ray Arnett | 64,037 | 41.1 |
| Total votes | Total votes | Total votes | 155,721 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1964

United States House of Representatives elections, 1964 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harlan Hagen (incumbent) | 121,304 | 66.7 |
| | Republican | James E. Williams Jr. | 60,523 | 33.3 |
| Total votes | Total votes | Total votes | 181,827 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1966

United States House of Representatives elections, 1966 :
| Party | Party | Candidate | Votes | % |
| | Republican | Bob Mathias | 96,699 | 55.9 |
| | Democratic | Harlan Hagen (incumbent) | 76,346 | 44.1 |
| Total votes | Total votes | Total votes | 173,045 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 1968

United States House of Representatives elections, 1968 :
| Party | Party | Candidate | Votes | % |
| | Republican | Bob Mathias (incumbent) | 100,008 | 65.2 |
| | Democratic | Harlan Hagen | 51,274 | 33.4 |
| | American Independent | Edward Calvin Williams | 2,186 | 1.4 |
| Total votes | Total votes | Total votes | 153,468 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1970

United States House of Representatives elections, 1970 :
| Party | Party | Candidate | Votes | % |
| | Republican | Bob Mathias (incumbent) | 86,071 | 63.2 |
| | Democratic | Milton Spartacus Miller | 48,415 | 33.4 |
| | American Independent | Nora E. Hensley | 1,709 | 3.4 |
| Total votes | Total votes | Total votes | 136,195 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1972

United States House of Representatives elections, 1972 :
| Party | Party | Candidate | Votes | % |
| | Republican | Bob Mathias (incumbent) | 109,993 | 66.5 |
| | Democratic | Vincent J. Lavery | 55,484 | 33.5 |
| Total votes | Total votes | Total votes | 165,477 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1974

United States House of Representatives elections, 1974 :
| Party | Party | Candidate | Votes | % |
| | Republican | William M. Ketchum (inc.) | 66,603 | 52.7 |
| | Democratic | George A. Seielstad | 59,931 | 47.3 |
| Total votes | Total votes | Total votes | 126,534 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1976

United States House of Representatives elections, 1976 :
| Party | Party | Candidate | Votes | % |
| | Republican | William M. Ketchum (inc.) | 101,658 | 64.2 |
| | Democratic | Dean Close | 56,683 | 35.8 |
| Total votes | Total votes | Total votes | 158,341 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1978

United States House of Representatives elections, 1978 :
| Party | Party | Candidate | Votes | % |
| | Republican | Bill Thomas | 85,663 | 59.3 |
| | Democratic | Bob Sogge | 58,900 | 40.7 |
| Total votes | Total votes | Total votes | 144,563 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1980

United States House of Representatives elections, 1980 :
| Party | Party | Candidate | Votes | % |
| | Republican | Bill Thomas (incumbent) | 126,046 | 71 |
| | Democratic | Mary Pat Timmermans | 51,415 | 29 |
| Total votes | Total votes | Total votes | 177,461 | 100 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1982

United States House of Representatives elections, 1982 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Richard H. Lehman | 92,762 | 59.5 |
| | Republican | Adrian C. Fondse | 59,664 | 38.3 |
| | Libertarian | Marshall William Fritz | 3,501 | 2.2 |
| Total votes | Total votes | Total votes | 155,927 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) |

### 1984

United States House of Representatives elections, 1984 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Richard H. Lehman (inc.) | 128,186 | 67.3 |
| | Republican | Dale L. Ewen | 62,339 | 32.7 |
| Total votes | Total votes | Total votes | 190,525 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1986

United States House of Representatives elections, 1986 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Richard H. Lehman (inc.) | 101,480 | 71.3 |
| | Republican | David C. Crevelt | 40,907 | 28.7 |
| Total votes | Total votes | Total votes | 142,387 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1988

United States House of Representatives elections, 1988 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Richard H. Lehman (inc.) | 125,715 | 69.9 |
| | Republican | David A. Linn | 54,034 | 30.1 |
| Total votes | Total votes | Total votes | 179,749 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1990

United States House of Representatives elections, 1990 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Richard H. Lehman (inc.) | 98,804 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1992

United States House of Representatives elections, 1992 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Gary Condit (incumbent) | 139,704 | 84.7 |
| | Libertarian | Kim R. Almstrom | 25,307 | 15.3 |
| Total votes | Total votes | Total votes | 165,011 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1994

United States House of Representatives elections, 1994 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Gary Condit (incumbent) | 91,106 | 65.52 |
| | Republican | Tom Carter | 44,046 | 31.68 |
| | Libertarian | James B. Morzella | 3,902 | 2.81 |
| Total votes | Total votes | Total votes | 139,054 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1996

United States House of Representatives elections, 1996 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Gary Condit (incumbent) | 108,827 | 65.8% |
| | Republican | Bill Conrad | 52,695 | 31.8% |
| | Libertarian | James Morzella | 2,233 | 1.3% |
| | Natural Law | Page Riskin | 1,831 | 1.1% |
| Total votes | Total votes | Total votes | 165,586 | 100.0% |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1998

United States House of Representatives elections, 1998 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Gary Condit (incumbent) | 118,842 | 86.79% |
| | Libertarian | Linda M. Degroat | 18,089 | 13.21% |
| Total votes | Total votes | Total votes | 136,931 | 100.0% |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2000

United States House of Representatives elections, 2000 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Gary Condit (incumbent) | 118,842 | 67.2% |
| | Republican | Steve R. Wilson | 56,465 | 31.3% |
| | Natural Law | Page Roth Riskin | 2,860 | 1.5% |
| Total votes | Total votes | Total votes | 178,167 | 100.0% |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2002

United States House of Representatives elections, 2002 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dennis Cardoza | 56,181 | 51.3 |
| | Republican | Dick Monteith | 47,528 | 43.4 |
| | American Independent | Kevin H. Cripe | 3,641 | 3.3 |
| | Libertarian | Linda De Groat | 2,194 | 2.0 |
| | No party | Donna Crowder (write-in) | 49 | 0.0 |
| Turnout | Turnout | Turnout | 109,593 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2004

United States House of Representatives elections, 2004 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dennis Cardoza (incumbent) | 103,732 | 67.5 |
| | Republican | Charles F. Pringle Sr. | 49,973 | 32.5 |
| Total votes | Total votes | Total votes | 153,705 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2006

United States House of Representatives elections, 2006 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dennis Cardoza (incumbent) | 71,182 | 65.5 |
| | Republican | John A. Kanno | 37,531 | 34.5 |
| Total votes | Total votes | Total votes | 108,713 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2008

United States House of Representatives elections, 2008 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dennis Cardoza (incumbent) | 130,192 | 100.0 |
| Total votes | Total votes | Total votes | 130,192 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2010

United States House of Representatives elections, 2010 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dennis Cardoza (incumbent) | 72,853 | 58.48 |
| | Republican | Michael Clare Berryhill Sr. | 51,716 | 41.52 |
| Total votes | Total votes | Total votes | 124,569 | 100.00 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2012

United States House of Representatives elections, 2012 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Anna Eshoo | 212,831 | 70.5 |
| | Republican | Dave Chapman | 89,103 | 29.5 |
| Total votes | Total votes | Total votes | 301,934 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2014

United States House of Representatives elections, 2014 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Anna Eshoo (incumbent) | 133,060 | 68% |
| | Republican | Richard B. Fox | 63,326 | 32% |
| Total votes | Total votes | Total votes | 196,386 | 100% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2016

United States House of Representatives elections, 2016 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Anna Eshoo (incumbent) | 230,460 | 71% |
| | Republican | Richard B. Fox | 93,470 | 29% |
| Total votes | Total votes | Total votes | 323,930 | 100% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2018

United States House of Representatives elections, 2018 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Anna Eshoo (incumbent) | 225,142 | 74.5% |
| | Republican | Christine Russell | 77,096 | 25.5% |
| Total votes | Total votes | Total votes | 302,238 | 100% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2020

2020 United States House of Representatives elections in California :
| Party | Party | Candidate | Votes | % |
| | Democratic | Anna Eshoo (incumbent) | 217,377 | 63.2 |
| | Democratic | Rishi Kumar | 126,750 | 36.8 |
| Total votes | Total votes | Total votes | 344,127 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2022

2022 United States House of Representatives elections in California :
| Party | Party | Candidate | Votes | % |
| | Democratic | Zoe Lofgren (incumbent) | 99,776 | 65.9 |
| | Republican | Peter Hernandez | 51,737 | 34.1 |
| Total votes | Total votes | Total votes | 151,513 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |