Senators
|
Party
|
Years served
|
Electoral history
|
Counties represented
|
District established January 6, 1851
|
Jonathan Warner (San Diego)
|
Democratic
|
January 6, 1851 – January 5, 1852
|
Elected in 1850. Re-elected in 1851. [data missing]
|
San Diego
|
David B. Kurtz (San Diego)
|
Whig
|
January 5, 1852 – January 1, 1855
|
Elected in 1852. Re-elected in 1854. [data missing]
|
San Diego, Los Angeles, San Bernardino
|
Benjamin D. Wilson (Los Angeles)
|
Democratic
|
January 1, 1855 – January 4, 1858
|
Elected in 1855. [data missing]
|
Cameron E. Thom (Los Angeles)
|
Democratic
|
January 4, 1858 – January 2, 1860
|
Elected in 1857. [data missing]
|
Andrés Pico (Los Angeles)
|
Whig
|
January 2, 1860 – January 6, 1862
|
Elected in 1859. [data missing]
|
Jacob C. Bogart (San Diego)
|
Democratic
|
January 6, 1862 – December 7, 1863
|
Elected in 1861. [data missing]
|
San Diego, San Bernardino
|
M. C. Tuttle (San Bernardino)
|
Union
|
December 7, 1863 – December 2, 1867
|
Elected in 1863. [data missing]
|
W. A. Conn (San Bernardino)
|
Democratic
|
December 2, 1867 – December 4, 1871
|
Elected in 1867. [data missing]
|
James McCoy (San Diego)
|
Democratic
|
December 4, 1871 – December 6, 1875
|
Elected in 1871. [data missing]
|
John W. Satterwhite (San Bernardino)
|
Independent Democrat
|
December 6, 1875 – January 8, 1883
|
Elected in 1875. Re-elected in 1879. [data missing]
|
Democratic
|
John C. Wolfskill (Riverside)
|
Democratic
|
January 8, 1883 – January 5, 1885
|
Elected in 1882. [data missing]
|
A. P. Johnson (San Diego)
|
Republican
|
January 5, 1885 – January 3, 1887
|
Elected in 1884. [data missing]
|
John P. Haynes (Eureka)
|
Democratic
|
January 3, 1887 – January 7, 1889
|
Elected in 1886. [data missing]
|
Del Norte, Humboldt
|
Frank McGowan (Eureka)
|
Republican
|
January 7, 1889 – January 4, 1897
|
Elected in 1888. Re-elected in 1982. [data missing]
|
James Gillett (Eureka)
|
Republican
|
January 4, 1897 – January 1, 1901
|
Elected in 1896. Retired to run for U.S. House of Representatives.
|
Thomas H. Selvage (Eureka)
|
Republican
|
January 1, 1901 – January 7, 1907
|
Elected in 1900. Re-elected in 1904. [data missing]
|
Del Norte, Humboldt, Trinity, Tehama
|
George T. Rolley (Eureka)
|
Republican
|
January 7, 1907 – January 4, 1909
|
Elected in 1906. [data missing]
|
Charles P. Cutten (Eureka)
|
Republican
|
January 4, 1909 – January 6, 1913
|
Elected in 1908. [data missing]
|
William Kehoe (Eureka)
|
Republican
|
January 6, 1913 – January 3, 1921
|
Elected in 1912. Re-elected in 1916. [data missing]
|
H. C. Nelson (Eureka)
|
Republican
|
January 3, 1921 – January 2, 1933
|
Elected in 1920. Re-elected in 1924. Re-elected in 1928. Lost renomination.
|
Harold J. Powers (Cedarville)
|
Republican
|
January 2, 1933 – October 5, 1953
|
Elected in 1932. Re-elected in 1936. Re-elected in 1940. Re-elected in 1944. Re-elected in 1948. Re-elected in 1852. Resigned to become Lieutenant Governor of California.
|
Lassen, Modoc, Plumas
|
Vacant
|
October 5, 1953 – December 29, 1953
|
|
Dale C. Williams (Alturas)
|
Democratic
|
December 29, 1953 – May 12, 1955
|
Elected to finish Powers's term. Died.
|
Vacant
|
May 12, 1955 – January 5, 1956
|
|
Stanley Arnold (Susanville)
|
Democratic
|
January 5, 1956 – July 16, 1965
|
Elected to finish Williams's term. Re-elected in 1956. Re-elected in 1960. Re-elected in 1964. Resigned when appointed to the Lassen County Superior Court.
|
Vacant
|
July 16, 1965 – January 2, 1967
|
|
Randolph Collier (Yreka)
|
Democratic
|
January 2, 1967 – November 30, 1976
|
Redistricted from the 2nd district and re-elected in 1966. Re-elected in 1968. Re-elected in 1972. Lost re-election.
|
Del Norte, Humboldt, Lake, Mendocino, Siskiyou, Sonoma, Trinity
|
Ray E. Johnson (Chico)
|
Republican
|
December 6, 1976 – March 7, 1983
|
Elected in 1976. Re-elected in 1980. Lost re-election.
|
Butte, Colusa, Glenn, Lassen, Modoc, Nevada, Placer, Placer, Shasta, Sierra, Siskiyou, Sutter, Tehama, Trinity, Yuba
|
Independent
|
March 7, 1983 – November 30, 1984
|
John Doolittle (Rocklin)
|
Republican
|
December 3, 1984 – January 2, 1991
|
Redistricted from the 3rd district and re-elected in 1984. Re-elected in 1988. Resigned when elected to the U.S. House of Representatives.
|
El Dorado, Lassen, Modoc, Nevada, Placer, Plumas, Sacramento, Sierra, Siskiyou, Sutter, Trinity, Yolo, Yuba
|
Vacant
|
January 2, 1991 – May 16, 1991
|
|
Tim Leslie (Tahoe City)
|
Republican
|
May 16, 1991 – November 30, 2000
|
Elected to finish Doolittle's term. Re-elected in 1992. Re-elected in 1996. Term-limited and ran for California State Assembly.
|
Alpine, Amador, Butte, Calaveras, El Dorado, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Sierra, Yuba
|
Rico Oller (San Andreas)
|
Republican
|
December 4, 2000 – November 30, 2004
|
Elected in 2000. Retired to run for U.S. House of Representatives.
|
Dave Cox (Fair Oaks)
|
Republican
|
December 6, 2004 – July 13, 2010
|
Elected in 2004. Re-elected in 2008. Died.
|
Alpine, Amador, Calaveras, El Dorado, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Sacramento, Sierra
|
Vacant
|
July 13, 2010 – January 6, 2011
|
|
Ted Gaines (El Dorado Hills)
|
Republican
|
January 6, 2011 – January 7, 2019
|
Elected to finish Cox's term. Re-elected in 2012. Re-elected in 2016. Resigned when elected to the California State Board of Equalization.
|
Alpine, El Dorado, Lassen, Modoc, Nevada, Placer, Plumas, Sacramento, Shasta, Shasta, Siskiyou
|
Vacant
|
January 7, 2019 – June 12, 2019
|
|
Brian Dahle (Bieber)
|
Republican
|
June 12, 2019 – November 30, 2024
|
Elected to finish Gaines's term. Re-elected in 2020. Term-limited and retired.
|
Megan Dahle (Bieber)
|
Republican
|
December 2, 2024 – present
|
Elected in 2024.
|