Senators
|
Party
|
Years served
|
Electoral history
|
Counties represented
|
District established January 3, 1887
|
James D. Byrnes (San Mateo)
|
Republican
|
January 3, 1887 – January 2, 1893
|
Elected in 1886. Re-elected in 1888. [data missing]
|
San Mateo, Santa Cruz
|
Thomas Flint Jr. (Hollister)
|
Republican
|
January 2, 1893 – January 2, 1905
|
Redistricted from the 35th district and re-elected in 1892. Re-elected in 1896. Re-elected in 1900. [data missing]
|
Monterey, San Benito
|
Charles B. Greenwell (Santa Barbara)
|
Republican
|
January 2, 1905 – January 4, 1909
|
Redistricted from the 35th district and re-elected in 1904. [data missing]
|
Santa Barbara, Ventura
|
Louis H. Roseberry (Santa Barbara)
|
Republican
|
January 4, 1909 – January 6, 1913
|
Elected in 1908. [data missing]
|
Prescott F. Cogswell (El Monte)
|
Republican
|
January 6, 1913 – January 8, 1917
|
Elected in 1912. Lost re-election as a Progressive.
|
Los Angeles
|
Progressive
|
Joseph A. Rominger (Los Angeles)
|
Republican
|
January 8, 1917 – January 5, 1925
|
Elected in 1918. Re-elected in 1920. [data missing]
|
Cadet Taylor (Pomona)
|
Republican
|
January 5, 1925 – January 7, 1929
|
Elected in 1924. [data missing]
|
Frank Merriam (Long Beach)
|
Republican
|
January 7, 1929 – January 6, 1931
|
Elected in 1928. Resigned when elected as Lieutenant Governor.
|
Vacant
|
January 6, 1931 – March 4, 1931
|
|
Ralph H. Clock (Long Beach)
|
Republican
|
March 4, 1931 – January 2, 1933
|
Elected to finish Merriam's term. Not a candidate for the next election.
|
Walter H. Duval (Santa Paula)
|
Republican
|
January 2, 1933 – January 4, 1937
|
Redistricted from the 25th district and re-elected in 1932. [data missing]
|
Ventura
|
James J. McBride (Santa Ana)
|
Democratic
|
January 4, 1937 – June 12, 1961
|
Elected in 1936. Re-elected in 1940. Re-elected in 1944. Re-elected in 1948. Re-elected in 1952. Re-elected in 1956. Re-elected in 1960. Died.
|
Vacant
|
June 12, 1961 – November 10, 1961
|
|
Robert J. Lagomarsino (Ojai)
|
Republican
|
November 10, 1961 – January 2, 1967
|
Elected to finish McBride's term. Re-elected in 1962. Redistricted to the 24th district.
|
Joseph M. Kennick (Los Angeles)
|
Democratic
|
January 2, 1967 – November 30, 1976
|
Elected in 1966. Re-elected in 1968. Re-elected in 1972. [data missing]
|
Los Angeles
|
William Campbell (Hacienda Heights)
|
Republican
|
December 6, 1976 – November 30, 1984
|
Elected in 1976. Re-elected in 1980. Redistricted to the 31st district.
|
Paul B. Carpenter (Cypress)
|
Democratic
|
December 3, 1984 – January 5, 1987
|
Redistricted from the 37th district and re-elected in 1984. Resigned to become a member of the California State Board of Equalization.
|
Los Angeles, Orange
|
Vacant
|
January 5, 1987 – May 18, 1987
|
|
Cecil Green (Norwalk)
|
Democratic
|
May 18, 1987 – November 30, 1992
|
Elected to finish Carpenter's term. Re-elected in 1988. [data missing]
|
John Lewis (Orange)
|
Republican
|
December 7, 1992 – November 30, 2000
|
Redistricted from the 35th district and re-elected in 1992. Re-elected in 1996. Retired due to term limits.
|
Orange
|
Dick Ackerman (Fullerton)
|
Republican
|
December 4, 2000 – November 30, 2008
|
Elected in 2000. Re-elected in 2004. Retired due to term limits.
|
Mimi Walters (Irvine)
|
Republican
|
December 1, 2008 – November 30, 2012
|
Elected in 2008. Redistricted to the 37th district.
|
Ricardo Lara (Bell Gardens)
|
Democratic
|
December 3, 2012 – January 7, 2019
|
Elected in 2012. Re-elected in 2016. Resigned after being elected as Insurance Commissioner.
|
Los Angeles
|
Vacant
|
January 7, 2019 – June 12, 2019
|
|
Lena Gonzalez (Long Beach)
|
Democratic
|
June 12, 2019 – present
|
Elected to finish Lara's term. Re-elected in 2020. Re-elected in 2024.
|