| District: | 34 |
| Chamber: | Senate |
| Population: | 927,893[1] |
| Population Year: | 2010 |
| Voting Age: | 688,872 |
| Citizen Voting Age: | 491,287 |
| Percent White: | 29.00 |
| Percent Black: | 1.40 |
| Percent Latino: | 46.85 |
| Percent Asian: | 21.36 |
| Percent Native American: | 0.40 |
| Percent Pacific Islander: | 0.44 |
| Percent Other Race: | 0.19 |
| Percent Remainder Of Multiracial: | 0.37 |
| Registered: | 441,884[2] |
| Democratic: | 41.48 |
| Republican: | 29.38 |
| Npp: | 24.36 |
California's 34th senatorial district is one of 40 California State Senate districts. It is currently represented by of .
The district encompasses northern Orange County, including most of Santa Ana, Anaheim, Placentia, Fullerton, Buena Park, La Habra, and the west side of Orange, along with the unincorporated community of South Whittier in Los Angeles County.
| Year | Office | Results |
|---|---|---|
| 2021 | Recall | align="right" No 55.2 – 44.8% |
| 2020 | President | Biden 55.7 – 42.3% |
| 2018 | Governor | Newsom 55.5 - 44.5% |
| Senator | Feinstein 54.2 - 45.8% | |
| 2016 | President | Clinton 58.5 – 35.8% |
| Senator | Sanchez 52.6 – 47.4% | |
| 2014 | Governor | Brown 52.5 – 47.5% |
| 2012 | President | Obama 53.3 – 44.4% |
| Senator | Feinstein 55.3 – 44.7% |
| Election results from statewide races | ||
|---|---|---|
| Year | Office | Results |
| 2000 | President | Gore 51.4 - 45.0% |
| Senator | Feinstein 53.0 - 38.1% | |
| 1998 | Governor | Davis 54.1 - 41.5% |
| Senator | Boxer 47.8 - 46.5% | |
| 1996 | President | Clinton 47.2 - 42.1% |
| 1994 | Governor | Wilson 61.7 - 32.7% |
| Senator | Huffington 55.4 - 32.5% | |
| 1992 | President | Bush 39.9 - 36.2% |
| Senator | Herschensohn 53.9 - 35.6% | |
| Senator | Seymour 46.1 - 42.2% | |
| Senators | Party | Years served | Electoral history | Counties represented | |
|---|---|---|---|---|---|
| District created January 3, 1887 | |||||
George G. Goucher | Democratic | January 3, 1887 – January 2, 1893 | Elected in 1886. Re-elected in 1890. Redistricted to the 16th district. | Alpine, Fresno, Mariposa, Mono | |
George S. Berry | Democratic | January 2, 1893 – January 7, 1895 | Redistricted from the 16th district and re-elected in 1892. | Inyo, Kern, Tulare | |
Sylvester C. Smith | Republican | January 7, 1895 – January 5, 1903 | Elected in 1894. Re-elected in 1898. Retired to run for U.S. House of Representatives. | Kern, San Luis Obispo | |
| William H. Savage | Republican | January 5, 1903 – January 2, 1911 | Elected in 1902. Re-elected in 1906. | Los Angeles | |
Lee C. Gates | Republican | January 2, 1911 – January 4, 1915 | Elected in 1910. | ||
| Henry S. Benedict | Republican | January 4, 1915 – November 7, 1916 | Elected in 1914. Resigned when elected to the U.S. House of Representatives. | ||
| Vacant | November 7, 1916 – January 6, 1919 | ||||
Charles W. Lyon | Republican | January 6, 1919 – January 5, 1931 | Elected in 1918. Re-elected in 1922. Re-elected in 1926. Lost re-election. | ||
James I. Wagy | Republican | January 5, 1931 – January 4, 1943 | Redistricted from the 32nd district and re-elected in 1930. Re-elected in 1934. Re-elected in 1938. | Kern | |
Jess R. Dorsey | Republican | January 4, 1943 – September 27, 1958 | Elected in 1942. Re-elected in 1946. Re-elected in 1950. Re-elected in 1954. Died and posthumously lost re-election.[3] | ||
| Vacant | September 27, 1958 – January 5, 1959 | ||||
Walter W. Stiern | Democratic | January 5, 1959 – January 2, 1967 | Elected in 1958. Re-elected in 1962. Redistricted to the 18th district. | ||
John G. Schmitz | Republican | January 2, 1967 – June 30, 1970 | Redistricted from the 35th district and re-elected in 1966. Resigned when elected to the U.S. House of Representatives. | Orange | |
| Vacant | June 30, 1970 – August 21, 1970 | ||||
Dennis Carpenter | Republican | August 21, 1970 – November 30, 1974 | Elected to finish Schmitz's term.[4] Re-elected in 1970. Redistricted to the 36th district. | ||
Robert B. Presley | Democratic | December 2, 1974 – November 30, 1982 | Elected in 1974. Re-elected in 1978. Re-elected in 1982. Re-elected in 1986. Redistricted to the 36th district. | Riverside, San Bernadrino | |
Ruben Ayala | Democratic | December 6, 1982 – November 30, 1994 | Elected in 1982. Re-elected in 1986. Re-elected in 1990. Redistricted to the 32nd district. | Los Angeles, San Bernadrino | |
| Rob Hurtt | Republican | December 5, 1994 – November 30, 1998 | Redistricted from the 32nd district and re-elected in 1994. Lost re-election. | Orange | |
Joe Dunn | Democratic | December 7, 1998 – November 4, 2006 | Elected in 1998. Re-elected in 2002. Retired to run for State Controller. | ||
Lou Correa | Democratic | December 4, 2006 – November 30, 2014 | Elected in 2006. Re-elected in 2010. Retired to run for Orange County Board of Supervisors. | ||
Janet Nguyen | Republican | December 1, 2014 – November 30, 2018 | Elected in 2014. Lost re-election. | Los Angeles, Orange | |
| Tom Umberg | Democratic | December 3, 2018 – present | Elected in 2018. Re-elected in 2022. | ||