# California's 21st congressional district

California's 21st congressional district (or CA-21) is a congressional district in the U.S. state of California. It is located in the San Joaquin Valley and includes parts of Fresno County and Tulare County. Cities in the district include the majority of Fresno, the north side of Visalia, and all of Sanger, Selma, Kingsburg, Parlier, Reedley, Orange Cove, Dinuba, Orosi, Cutler, Farmersville, Woodlake and Exeter. The district is currently represented by Democrat Jim Costa.

## Demographics

According to the APM Research Lab's Voter Profile Tools (featuring the U.S. Census Bureau's 2019 American Community Survey), the district contained about 377,000 potential voters (citizens, age 18+). Of these, 63% are Latino, while 26% are White. Immigrants make up 16% of the district's potential voters. Median income among households (with one or more potential voter) in the district is about $51,500, while 15% of households live below the poverty line. As for the educational attainment of potential voters in the district, 23% of those 25 and older have not earned a high school degree, while 12% hold a bachelor's or higher degree.

## Recent election results from statewide races

| Year | Office | Results |
| 2008 | President | Obama 58% - 41% |
| 2010 | Governor | Brown 49% - 45% |
| 2010 | Lt. Governor | Maldonado 50% - 40% |
| 2010 | Secretary of State | Bowen 48% - 43% |
| 2010 | Attorney General | Cooley 49% - 42% |
| 2010 | Treasurer | Lockyer 53% - 40% |
| 2010 | Controller | Chiang 55% - 37% |
| 2012 | President | Obama 58% - 40% |
| 2014 | Governor | Brown 54% - 46% |
| 2016 | President | Clinton 58% - 36% |
| 2018 | Governor | Newsom 56% - 44% |
| 2018 | Attorney General | Becerra 59% - 41% |
| 2020 | President | Biden 59% - 39% |
| 2022 | Senate (Reg.) | Padilla 53% - 47% |
| 2022 | Governor | Newsom 51% - 49% |
| 2022 | Lt. Governor | Kounalakis 52% - 48% |
| 2022 | Secretary of State | Weber 53% - 47% |
| 2022 | Attorney General | Bonta 52% - 48% |
| 2022 | Treasurer | Ma 52% - 48% |
| 2022 | Controller | Chen 51% - 49% |
| 2024 | President | Harris 51% - 47% |
| 2024 | Senate (Reg.) | Schiff 52% - 48% |

## Composition

| FIPS County Code | County | Seat | Population |
| 19 | Fresno | Fresno | 1,017,162 |
| 107 | Tulare | Visalia | 479,468 |

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

* Fresno – 542,107
* Visalia – 141,384
* Sanger – 26,617
* Reedley – 25,227
* Selma – 24,674
* Dinuba – 24,563
* Parlier – 18,494
* Kingsburg – 12,380
* Farmersville – 10,382
* Exeter – 10,324

### 2,500 – 10,000 people

* Orange Cove – 9,649
* Orosi – 8,329
* Woodlake – 7,419
* Fowler – 6,700
* Old Fig Garden – 5,477
* Goshen – 4,968
* Mayfair – 4,831
* Sunnyside – 4,627
* Cutler – 4,480
* Ivanhoe – 4,198

## List of members representing the district

| Representative | Party | Dates | Cong ress(es) | Electoral history | Counties |
| District created January 3, 1943 ||||||
| Harry R. Sheppard (Yucaipa) | Democratic | January 3, 1943 – January 3, 1953 | 78th 79th 80th 81st 82nd | Redistricted from the 19th district and re-elected in 1942. Re-elected in 1944. Re-elected in 1946. Re-elected in 1948. Re-elected in 1950. Redistricted to the 27th district. | 1943–1953 Northern Los Angeles, San Bernardino |
| Edgar W. Hiestand (Burbank) | 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 27th district and lost re-election. | 1953–1983 Los Angeles |
| Augustus Hawkins (Los Angeles) | Democratic | January 3, 1963 – January 3, 1975 | 88th 89th 90th 91st 92nd 93rd | Elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Re-elected in 1972. Redistricted to the 29th district. | 1953–1983 Los Angeles |
| James C. Corman (Los Angeles) | Democratic | January 3, 1975 – January 3, 1981 | 94th 95th 96th | Redistricted from the 22nd district and re-elected in 1974. Re-elected in 1976. Re-elected in 1978. Lost re-election. | 1953–1983 Los Angeles |
| Bobbi Fiedler (Los Angeles) | Republican | January 3, 1981 – January 3, 1987 | 97th 98th 99th | Elected in 1980. Re-elected in 1982. Re-elected in 1984. Retired to run for U.S. Senator. | 1953–1983 Los Angeles |
| Bobbi Fiedler (Los Angeles) | Republican | January 3, 1981 – January 3, 1987 | 97th 98th 99th | Elected in 1980. Re-elected in 1982. Re-elected in 1984. Retired to run for U.S. Senator. | 1983–1993 Los Angeles (western San Fernando Valley), southeastern Ventura |
| Elton Gallegly (Simi Valley) | Republican | January 3, 1987 – January 3, 1993 | 100th 101st 102nd | Elected in 1986. Re-elected in 1988. Re-elected in 1990. Redistricted to the 23rd district. | 1983–1993 Los Angeles (western San Fernando Valley), southeastern Ventura |
| Bill Thomas (Bakersfield) | Republican | January 3, 1993 – January 3, 2003 | 103rd 104th 105th 106th 107th | Redistricted from the 20th district and re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Redistricted to the 22nd district. | 1993–2003 Kern, eastern Tulare |
| Devin Nunes (Tulare) | Republican | January 3, 2003 – January 3, 2013 | 108th 109th 110th 111th 112th | Elected in 2002. Re-elected in 2004. Re-elected in 2006. Re-elected in 2008. Re-elected in 2010. Redistricted to the 22nd district. | 2003–2013 Eastern Fresno, Tulare |
| David Valadao (Hanford) | Republican | January 3, 2013 – January 3, 2019 | 113th 114th 115th | Elected in 2012. Re-elected in 2014. Re-elected in 2016. Lost re-election. | 2013–2023 Kings, parts of Fresno, Kern and Tulare. |
| TJ Cox (Selma) | Democratic | January 3, 2019 – January 3, 2021 | 116th | Elected in 2018. Lost re-election. | 2013–2023 Kings, parts of Fresno, Kern and Tulare. |
| David Valadao (Hanford) | Republican | January 3, 2021– January 3, 2023 | 117th | Elected again in 2020. Redistricted to the 22nd district. | 2013–2023 Kings, parts of Fresno, Kern and Tulare. |
| Jim Costa (Fresno) | Democratic | January 3, 2023 – present | 118th 119th | Redistricted from the 16th district and re-elected in 2022. Re-elected in 2024. | 2023–present central San Joaquin Valley between Fresno and Visalia |

## Election results
### 1942

1942 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harry R. Sheppard (Incumbent) | 38,419 | 96.6 |
| | Republican | Arthur E. Isham (write-in) | 1,350 | 3.4 |
| Total votes | Total votes | Total votes | 39,769 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1944

1944 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harry R. Sheppard (Incumbent) | 48,539 | 58.5 |
| | Republican | Earl S. Webb | 34,409 | 41.5 |
| Total votes | Total votes | Total votes | 82,948 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1946

1946 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harry R. Sheppard (Incumbent) | 37,229 | 52.7 |
| | Republican | Lowell E. Lathrop | 33,395 | 47.3 |
| Total votes | Total votes | Total votes | 70,624 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1948

1948 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harry R. Sheppard (Incumbent) | 61,383 | 55.2 |
| | Republican | Lowell E. Lathrop | 47,411 | 42.6 |
| | Progressive | Howard J. Louks | 2,422 | 2.2 |
| Total votes | Total votes | Total votes | 111,216 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1950

1950 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Harry R. Sheppard (Incumbent) | 62,994 | 57.4 |
| | Republican | R. E. Reynolds | 46,693 | 42.6 |
| Total votes | Total votes | Total votes | 109,687 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1952

1952 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Edgar W. Hiestand | 112,100 | 53.6 |
| | Democratic | Everett G. Burkhalter | 97,007 | 46.4 |
| Total votes | Total votes | Total votes | 209,107 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican win (new seat) | Republican win (new seat) | Republican win (new seat) | Republican win (new seat) |

### 1954

1954 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Edgar W. Hiestand (Incumbent) | 100,258 | 58.7 |
| | Democratic | William E. "Bill" Roskam | 70,486 | 41.3 |
| Total votes | Total votes | Total votes | 170,744 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1956

1956 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Edgar W. Hiestand (Incumbent) | 153,679 | 62.6 |
| | Democratic | W. C. "Bill" Stethem | 91,683 | 37.4 |
| Total votes | Total votes | Total votes | 245,362 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1958

1958 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Edgar W. Hiestand (Incumbent) | 127,238 | 51.9 |
| | Democratic | Mrs. Rudd Brown | 118,141 | 48.1 |
| Total votes | Total votes | Total votes | 245,379 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1960

1960 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Edgar W. Hiestand (Incumbent) | 179,376 | 58.4 |
| | Democratic | Mrs. Rudd Brown | 127,591 | 41.6 |
| Total votes | Total votes | Total votes | 306,967 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1962

1962 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Augustus F. Hawkins | 73,465 | 84.6 |
| | Republican | Herman Smith | 13,371 | 15.2 |
| Total votes | Total votes | Total votes | 86,836 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) | Democratic win (new seat) |

### 1964

1964 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Augustus F. Hawkins (Incumbent) | 106,231 | 90.3 |
| | Republican | Rayfield Lundy | 11,374 | 9.7 |
| Total votes | Total votes | Total votes | 117,605 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1966

1966 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Augustus F. Hawkins (Incumbent) | 74,216 | 84.8 |
| | Republican | Rayfield Lundy | 13,294 | 15.2 |
| Total votes | Total votes | Total votes | 87,510 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1968

1968 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Augustus F. Hawkins (Incumbent) | 87,205 | 91.6 |
| | Republican | Rayfield Lundy | 7,995 | 8.4 |
| Total votes | Total votes | Total votes | 95,200 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1970

1970 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Augustus F. Hawkins (Incumbent) | 75,127 | 94.5 |
| | Republican | Southy M. Johnson | 4,349 | 5.5 |
| Total votes | Total votes | Total votes | 79,476 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1972

1972 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Augustus F. Hawkins (Incumbent) | 92,799 | 82.9 |
| | Republican | Rayfield Lundy | 19,187 | 17.1 |
| Total votes | Total votes | Total votes | 111,986 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1974

1974 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | James C. Corman (Incumbent) | 86,778 | 73.5 |
| | Republican | Mel Nadell | 31,365 | 26.5 |
| Total votes | Total votes | Total votes | 118,143 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1976

1976 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | James C. Corman (Incumbent) | 101,837 | 66.5 |
| | Republican | Erwin Ed Hogan | 44,094 | 28.8 |
| | Peace and Freedom | Bill Hill | 7,178 | 4.7 |
| Total votes | Total votes | Total votes | 153,109 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1978

1978 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | James C. Corman (Incumbent) | 73,869 | 59.5 |
| | Republican | Rod Walsh | 44,519 | 35.9 |
| | Peace and Freedom | Bill Hill | 5,750 | 4.6 |
| Total votes | Total votes | Total votes | 124,138 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1980

1980 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Bobbi Fiedler | 74,674 | 48.7 |
| | Democratic | James C. Corman (Incumbent) | 73,898 | 48.2 |
| | Libertarian | George J. Lehmann | 2,790 | 1.8 |
| | Peace and Freedom | Jan B. Tucker | 2,038 | 1.3 |
| Total votes | Total votes | Total votes | 153,400 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 1982

1982 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Bobbi Fiedler (Incumbent) | 138,474 | 71.8 |
| | Democratic | George Henry Margolis | 46,412 | 24.1 |
| | Libertarian | Daniel Wiener | 7,881 | 4.1 |
| Total votes | Total votes | Total votes | 192,767 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1984

1984 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Bobbi Fiedler (Incumbent) | 173,504 | 72.3 |
| | Democratic | Charles "Charlie" Davis | 62,085 | 25.9 |
| | Libertarian | Robert Townsend Leet | 4,379 | 1.8 |
| Total votes | Total votes | Total votes | 239,968 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1986

1986 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Elton Gallegly | 132,090 | 68.4 |
| | Democratic | Gilbert R. Saldana | 54,497 | 28.2 |
| | Libertarian | Daniel Wiener | 6,504 | 3.4 |
| Total votes | Total votes | Total votes | 193,091 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1988

1988 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Elton Gallegly (Incumbent) | 181,413 | 69.1 |
| | Democratic | Donald E. Stevens | 75,739 | 28.8 |
| | Libertarian | Robert Jay | 5,519 | 2.1 |
| Total votes | Total votes | Total votes | 262,671 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1990

1990 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Elton Gallegly (Incumbent) | 118,326 | 58.4 |
| | Democratic | Richard D. Freiman | 68,921 | 34.0 |
| | Libertarian | Peggy L. Christensen | 15,364 | 7.6 |
| Total votes | Total votes | Total votes | 202,611 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1992

1992 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Bill Thomas (Incumbent) | 127,758 | 65.2 |
| | Democratic | Deborah A. Vollmer | 68,058 | 34.7 |
| | Libertarian | Mike Hodges (write-in) | 149 | 0.1 |
| Total votes | Total votes | Total votes | 195,965 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1994

1994 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Bill Thomas (Incumbent) | 116,874 | 68.10 |
| | Democratic | John L. Evans | 47,517 | 27.69 |
| | Libertarian | Mike Hodges | 6,899 | 4.02 |
| | No party | Vollmer (write-in) | 339 | 0.20 |
| Total votes | Total votes | Total votes | 171,629 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1996

1996 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Bill Thomas (Incumbent) | 125,916 | 65.9 |
| | Democratic | Deborah Vollmer | 50,694 | 26.5 |
| | Reform | John Evans | 8,113 | 4.3 |
| | Natural Law | Jane Bialosky | 3,380 | 1.8 |
| | Libertarian | Mike Hodges | 3,049 | 1.5 |
| | Republican | Karen Gentry (write-in) | 172 | 0.0 |
| Total votes | Total votes | Total votes | 191,324 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 1998

1998 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Bill Thomas (Incumbent) | 115,989 | 78.91 |
| | Democratic | John Evans | 30,994 | 21.09 |
| Total votes | Total votes | Total votes | 146,983 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2000

2000 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Bill Thomas (Incumbent) | 142,539 | 71.6 |
| | Democratic | Pedro "Pete" Martinez | 49,318 | 24.8 |
| | Libertarian | James R.S. Manion | 7,243 | 3.6 |
| Total votes | Total votes | Total votes | 199,100 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2002

2002 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Devin Nunes | 87,544 | 70.5 |
| | Democratic | David G. LaPere | 32,584 | 26.3 |
| | Libertarian | Jonathan Richter | 4,070 | 3.2 |
| Total votes | Total votes | Total votes | 124,198 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican win (new seat) | Republican win (new seat) | Republican win (new seat) | Republican win (new seat) |

### 2004

2004 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Devin Nunes (Incumbent) | 140,721 | 73.2 |
| | Democratic | Fred B. Davis | 51,594 | 26.8 |
| Total votes | Total votes | Total votes | 192,315 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2006

2006 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Devin Nunes (Incumbent) | 95,214 | 66.8 |
| | Democratic | Steven Haze | 42,718 | 29.9 |
| | Green | John Roger Miller | 4,729 | 3.3 |
| Total votes | Total votes | Total votes | 142,661 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2008

2008 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Devin Nunes (Incumbent) | 143,498 | 68.4 |
| | Democratic | Larry Johnson | 66,317 | 31.6 |
| Total votes | Total votes | Total votes | 209,815 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2010

2010 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | Devin Nunes (Incumbent) | 135,979 | 100.0 |
| Total votes | Total votes | Total votes | 135,979 | 100.0 |
| Turnout | Turnout | Turnout | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2012

2012 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | David Valadao | 67,164 | 57.8 |
| | Democratic | John Hernandez | 49,119 | 42.2 |
| Total votes | Total votes | Total votes | 116,283 | 100.0 |
| | Republican win (new seat) | Republican win (new seat) | Republican win (new seat) | Republican win (new seat) |

### 2014

2014 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | David Valadao (Incumbent) | 45,907 | 57.8 |
| | Democratic | Amanda Renteria | 33,470 | 42.2 |
| Total votes | Total votes | Total votes | 79,377 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2016

2016 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | David Valadao (Incumbent) | 75,126 | 56.7 |
| | Democratic | Emilio Huerta | 57,282 | 43.3 |
| Total votes | Total votes | Total votes | 132,408 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2018

2018 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | TJ Cox | 57,239 | 50.4 |
| | Republican | David Valadao (Incumbent) | 56,377 | 49.6 |
| Total votes | Total votes | Total votes | 113,616 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 2020

2020 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Republican | David Valadao | 85,928 | 50.45 |
| | Democratic | TJ Cox (Incumbent) | 84,406 | 49.55 |
| Total votes | Total votes | Total votes | 170,334 | 100.0 |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

### 2022

2022 United States House of Representatives elections in California, 21st district :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jim Costa (Incumbent) | 68,074 | 54.2 |
| | Republican | Michael Maher | 57,573 | 45.8 |
| Total votes | Total votes | Total votes | 125,647 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |