California's 10th congressional district

California's 10th congressional district is a congressional district in the U.S. state of California. Currently, the 10th district encompasses parts of the eastern San Francisco Bay Area. It is currently represented by Democrat Mark DeSaulnier.

"CA-10" redirects here. For the state route, see California State Route 10 (disambiguation).

California's 10th congressional district
Interactive map of district boundaries since 2023 (Used in the 2022 elections)
Representative
  Mark DeSaulnier
D–Concord
Population (2022)754,064
Median household
income		$143,122[1]
Ethnicity
Cook PVID+18[2]

The district previously included all of Stanislaus County and part of San Joaquin County. It was centered on Modesto. Cities in the district included Oakdale, Manteca, Modesto, Tracy, and Turlock.[3]

Redistricting before the 2022 elections moved the district to the San Francisco Bay Area. It includes the cities of Concord, Walnut Creek, Danville, San Ramon, Brentwood, and southern Antioch in Contra Costa County, and eastern Dublin in Alameda County. It was essentially the successor of the old 11th district.[4]

History

Until 2012

Prior to redistricting by the California Citizens Redistricting Commission going into effect in 2012, the 10th district stretched from Livermore to Dixon and the outskirts of Vacaville. It consisted of portions of Alameda, Contra Costa, Sacramento, and Solano Counties.

District borders, 2002-2012.

Following redistricting in 1992, the 10th district was based in the East Bay, and included parts of Alameda and Contra Costa counties. It received national attention in 1996 when Democrat Ellen Tauscher defeated incumbent Republican Bill Baker in what was considered an upset.[5]

In the 2002 redistricting of California, all seats were made safe[6] for the parties of incumbent officeholders. The district boundaries were extended to include parts of Solano County, southwestern Sacramento County, eastern Contra Costa County and El Cerrito in western Contra Costa County. Although much of the suburban Tri-Valley region was shifted to the 11th congressional district, the city of Livermore remained in the 10th at Tauscher's request (as a member of the U.S. House Committee on Energy and Commerce, she had some oversight responsibilities over the U.S. Department of Energy, and hence indirectly of Lawrence Livermore National Laboratory).

On June 26, 2009, Tauscher resigned her seat to be sworn in as Undersecretary of State for Arms Control and International Security.[7][8][9] In the ensuing special election held on November 3, 2009, former Democratic Lieutenant Governor John Garamendi won the seat over Republican David Harmer 53.0% to 42.7%. Immediately following redistricting, Garamendi successfully ran for re-election in California's 3rd congressional district, which shares many municipalities with the 2002 version of the 10th district (e.g. Vacaville and Fairfield), but lies significantly northwest of the current 10th district.

2012 – 2022

The 10th congressional district starting with the election of 2012 and lasting through the election of 2020 included all of Stanislaus County (including Ceres, Oakdale, Modesto, Riverbank, and Turlock) and the southern portion of San Joaquin County (including Tracy and Manteca).[3]

This went into effect in 2012, as the result of redistricting by the California Citizens Redistricting Commission. This version of the 10th included much of the core of the old 18th district (Modesto, Ceres, and the southwestern half of Stanislaus County), though the 18th also included a substantial portion of Stockton. It also shares much of the northwestern portion of the old 19th district (Turlock, Riverbank, Oakdale, and the rest of northeastern Stanislaus County).

Republican Jeff Denham transferred from the prior 19th district to the newer 10th. He held it for three terms until being defeated in 2018 by Democrat Josh Harder, who won reelection in 2020.

After 2022

The 10th district was redrawn in time for the 2022 election, being divided up between California's 5th congressional district (which now includes eastern portions of Modesto and eastern portions of Turlock), California's 9th congressional district (which is centered on Stockton, California and includes Tracy), and California's 13th congressional district (which includes western Modesto and western Turlock) .[10] Current 10th district incumbent Josh Harder is running for reelection in the new version of California's 9th congressional district.

Voter Registration Statistics

The California Secretary of State publishes reports on California voter registration on a regular basis. Before the 2018 primary election, they published a report dating May 21, 2018.

Date Democratic Republican American Independent Green Libertarian No Party Preference
May 21, 2018[11] 127,878 117,900 10,011 959 2,484 70,251

Election results from statewide races

1992 – 2022
Year Office Results
1992 President Clinton 42.4 - 35.6%
Senator Boxer 48.0 - 42.5%
Senator Feinstein 56.9 - 37.7%
1994 Governor[12] Wilson 59.7 - 37.1%
Senator[13] Feinstein 52.3 - 42.0%
1996 President[14] Clinton 48.2 - 42.6%
1998 Governor[15] Davis 56.0 - 41.3%
Senator[16] Boxer 50.2 - 46.8%
2000 President[17] Gore 51.3 - 44.8%
Senator[18] Feinstein 55.8 - 40.0%
2002 Governor[19] Davis 49.9 - 39.1%
2003 Recall[20][21] No 52.6 - 47.4%
Schwarzenegger 42.2 - 34.7%
2004 President[22] Kerry 58.5 - 40.4%
Senator[23] Boxer 60.1 - 36.6%
2006 Governor[24] Schwarzenegger 56.2 - 38.7%
Senator[25] Feinstein 65.5 - 30.0%
2008 President[26] Obama 64.7 - 33.1%
2010 Governor Brown 57.4 - 38.7%
Senator Boxer 56.0 - 39.4%
2012 President Obama 50.6 - 47.0%
Senator[27] Feinstein 52.1 - 47.9%
2014 Governor[28] Brown 51.7 - 48.3%
2016 President Clinton 48.5 - 45.5%
Senator[29] Harris 57.1 - 42.9%
2018 Governor[30] Cox 50.5 - 49.5%
Senator[31] de Leon 56.9 - 43.1%
2020 President Biden 50.3 - 47.4%
2021 Recall[32][33] Yes 53.3 - 46.7%
Elder 57.6 - 6.5%
2022 Governor[34] Newsom 64.8 - 35.2%
Senator Padilla 66.3 - 33.7%

Composition
# County Seat Population
13 Contra Costa Martinez 1,161,413

As of the 2020 redistricting, California's 10th congressional district encompasses most of Contra Costa County, and part of Alameda County.

Contra Costa County is split between this district, the 8th district, and the 9th district. The northern border is partitioned by Grizzly Peak Blvd, Seaview Trail, Camino Pablo, Bear Creek Rd, San Pablo Creek, Bear Creek, Brianes Reservoir, Burlington Northern Santa Fe, Highway 4, Alhambra Ave, Pacheco Blvd, Grandview Ave, Central Ave, Imhoff Dr, Bares Ave, Mount Diablo Creek, Union Pacific, Contra Costa Canal, 4WD Rd, Bailey Rd, James Donlon Blvd, Cambridge Dr, Reseda Way, S Royal links Cir, Carpinteria Dr, Barmouth Dr, Hillcrest Ave, Highway 4, and Highway 160. The western border is partitioned by Old River, Italian Slough, Western Farms Ranch Rd, Rankin Rd, Highway J14, Byron Hot Springs Rd, Camino Diablo, Kellogg Creek, Sellers Ave, Brentwood Blvd, Alloro Dr, Ghiggeri Dr, Emilio Dr, Guthrie Ln, Balfour Rd, Chestnut St, Byron Highway, Orwood Rd, Burlington Northern Santa Fe, Werner Dredger Cut, and Rock Slough. The 10th district takes in the south sides of the cities of Antioch and Martinez, the cities of Concord, Brentwood, Oakley, Pleasant Hill, Clayton, Walnut Creek, Lafayette, Orinda, and San Ramon, as well as the towns of Danville and Moraga.

Alameda County is split between this district and the 14th district. They are partitioned by Sinclair Freeway, Amador Valley Blvd, Emerald Ave, Tamarack Dr, Brighton Dr, Ione Way, Newcastle Ln, Dougherty Rd, Highway 580, Lembert Hills Dr. The 10th district takes in San Ramon Village and Komandorski Village.

Cities & CDP with 10,000 or more people

List of members representing the district
Member Party Dates Cong
ress		 Electoral history Counties
District created March 4, 1913

William Stephens
(Los Angeles)		 Progressive March 4, 1913 –
July 22, 1916		 63rd
64th		 Redistricted from the 7th district and re-elected in 1912.
Re-elected in 1914.
Resigned to become Lieutenant Governor of California.		 1913–1933
Los Angeles (Los Angeles)
Vacant July 22, 1916 –
November 7, 1916		 64th

Henry S. Benedict
(Los Angeles)		 Republican November 7, 1916 –
March 3, 1917		 Elected to finish Stephens's term.
Ran for the next term as a Progressive but withdrew.

Henry Z. Osborne
(Los Angeles)		 Republican March 4, 1917 –
February 8, 1923		 65th
66th
67th		 Elected in 1916.
Re-elected in 1918.
Re-elected in 1920.
Re-elected in 1922 but died.
Vacant February 8, 1923 –
May 1, 1923		 67th
68th

John D. Fredericks
(Los Angeles)		 Republican May 1, 1923 –
March 3, 1927		 68th
69th		 Elected to finish Osborne's term.
Re-elected in 1924.
Retired.

Joe Crail
(Los Angeles)		 Republican March 4, 1927 –
March 3, 1933		 70th
71st
72nd		 Elected in 1926.
Re-elected in 1928.
Re-elected in 1930.
Retired.

Henry E. Stubbs
(Santa Maria)		 Democratic March 4, 1933 –
February 28, 1937		 73rd
74th
75th		 Elected in 1932.
Re-elected in 1934.
Re-elected in 1936.
Died.		 1933–1943
Kern, San Luis Obispo, Santa Barbara, Tulare, Ventura
Vacant February 28, 1937 –
May 4, 1937		 75th

Alfred J. Elliott
(Tulare)		 Democratic May 4, 1937 –
January 3, 1949		 75th
76th
77th
78th
79th
80th		 Elected to finish Stubbs's term.
Re-elected in 1938.
Re-elected in 1940.
Re-elected in 1942.
Re-elected in 1944.
Re-elected in 1946.
Retired.
1943–1953
Kern, Kings, Tulare

Thomas H. Werdel
(Bakersfield)		 Republican January 3, 1949 –
January 3, 1953		 81st
82nd		 Elected in 1948.
Re-elected in 1950.
Redistricted to the 14th district.
Lost re-election.

Charles Gubser
(Gilroy)		 Republican January 3, 1953 –
December 31, 1974		 83rd
84th
85th
86th
87th
88th
89th
90th
91st
92nd
93rd		 Elected in 1952.
Re-elected in 1954.
Re-elected in 1956.
Re-elected in 1958.
Re-elected in 1960.
Re-elected in 1962.
Re-elected in 1964.
Re-elected in 1966.
Re-elected in 1968.
Re-elected in 1970.
Re-elected in 1972.
Retired and resigned.		 1953–1963
San Benito, Santa Clara, Santa Cruz
1963–1967
San Benito, western Santa Clara
1967–1973
Western Santa Clara
1973–1975
Most of Santa Clara
Vacant December 31, 1974 –
January 3, 1975		 93rd

Don Edwards
(San Jose)		 Democratic January 3, 1975 –
January 3, 1993		 94th
95th
96th
97th
98th
99th
100th
101st
102nd		 Redistricted from the 9th district and re-elected in 1974.
Re-elected in 1976.
Re-elected in 1978.
Re-elected in 1980.
Re-elected in 1982.
Re-elected in 1984.
Re-elected in 1986.
Re-elected in 1988.
Re-elected in 1990.
Redistricted to the 16th district.		 1975–1983
Southwest Alameda, northern Santa Clara
1983–1993
SW Alameda, Santa Clara (eastern San Jose)

Bill Baker
(Walnut Creek)		 Republican January 3, 1993 –
January 3, 1997		 103rd
104th		 Elected in 1992.
Re-elected in 1994.
Lost re-election.		 1993–2003
Eastern Alameda, eastern Contra Costa

Ellen Tauscher
(Pleasanton)		 Democratic January 3, 1997 –
June 26, 2009		 105th
106th
107th
108th
109th
110th
111th		 Elected in 1996.
Re-elected in 1998.
Re-elected in 2000.
Re-elected in 2002.
Re-elected in 2004.
Re-elected in 2006.
Re-elected in 2008.
Resigned to become Undersecretary of State for Arms Control and International Security.
2003–2013

Southeast Alameda, most of Contra Costa, southwest Sacramento, most of Solano
Vacant June 26, 2009 –
November 3, 2009		 111th

John Garamendi
(Walnut Creek)		 Democratic November 3, 2009 –
January 3, 2013		 111th
112th		 Elected to finish Tauscher's term.
Re-elected in 2010.
Redistricted to the 3rd district.

Jeff Denham
(Turlock)		 Republican January 3, 2013 –
January 3, 2019		 113th
114th
115th		 Redistricted from the 19th district and re-elected in 2012.
Re-elected in 2014.
Re-elected in 2016.
Lost re-election.		 2013–2023

Central Valley including Modesto and Tracy

Josh Harder
(Turlock)		 Democratic January 3, 2019 –
January 3, 2023		 116th
117th		 Elected in 2018.
Re-elected in 2020.
Redistricted to the 9th district.

Mark DeSaulnier
(Concord)		 Democratic January 3, 2023 –
present		 118th Redistricted from the 11th district and re-elected in 2022. 2023–present

Eastern San Francisco Bay Area, including parts of Stanislaus and San Joaquin

Election results for representatives

1912
1912 United States House of Representatives elections
Party Candidate Votes %
Progressive William Stephens (Incumbent) 43,637 53.4
Democratic George Ringo 17,890 21.9
Socialist Fred C. Wheeler 17,126 21.0
Prohibition Emory D. Martindale 2,995 3.7
Total votes 81,648 100.0
Turnout  
Progressive hold

1914
1914 United States House of Representatives elections
Party Candidate Votes %
Progressive William Stephens (Incumbent) 44,141 38.4
Republican Henry Z. Osborne 33,172 28.9
Democratic Nathan Newby 17,810 15.5
Socialist Ralph L. Criswell 14,900 13.0
Prohibition Henry Clay Needham 4,903 4.3
Total votes 70,926 100.0
Turnout  
Progressive hold

1916 (Special)
1916 10th congressional district special election[35]
Party Candidate Votes %
Progressive Henry S. Benedict (write-in) 19,062 62.82
Independent Joy Clark (write-in) 7,149 23.59
Prohibition Henry Clay Needham (write-in) 1,310 4.32
Unknown George Clark (write-in) 1,073 3.54
Socialist James H. Ryckman (write-in) 911 3.01
Democratic Rufus V. Bowden (write-in) 553 1.83
Unknown John C. Wray (write-in) 270 0.89
Total votes 30,328 100.0
Turnout  
Progressive hold

1916
1916 United States House of Representatives elections
Party Candidate Votes %
Republican Henry Z. Osborne 63,913 49.5
Democratic Rufus W. Bowden 33,225 25.7
Progressive Henry Stanley Benedict 14,305 11.1
Socialist James H. Ryckman 9,000 7.0
Prohibition Henry Clay Needham 8,781 6.8
Total votes 129,224 100.0
Turnout  
Republican hold

1918
1918 United States House of Representatives elections
Party Candidate Votes %
Republican Henry Z. Osborne (Incumbent) 72,773 88.2
Socialist James H. Ryckman 9,725 11.8
Total votes 82,498 100.0
Turnout  
Republican hold

1920
1920 United States House of Representatives elections[36]
Party Candidate Votes %
Republican Henry Z. Osborne (Incumbent) 97,469 82.7
Socialist Upton Sinclair 20,439 17.3
Total votes 117,908 100.0
Turnout  
Republican hold

1922
1922 United States House of Representatives elections[37]
Party Candidate Votes %
Republican Henry Z. Osborne (Incumbent) 98,739 100.0
Turnout 98,739 100
Republican hold

1923 (Special)

Republican John D. Fredericks won the special election to replace fellow Republican Henry Z. Osborne, who died in office.[38]

1923 10th congressional district special election[39]
Party Candidate Votes %
Republican John D. Fredericks 28,084 36.16
Republican Henry Z. Osborne Jr. 18,103 23.31
Democratic Lloy Galphin 13,748 17.70
Republican Alfred L. Bartlett 8,857 11.40
Republican Frank A. McDonald 5,884 7.58
Prohibition John C. Bell 1,875 2.41
Independent Upton Sinclair 1,113 1.43
Total votes 77,664 100
Turnout  
Republican hold

1924
1924 United States House of Representatives elections[40]
Party Candidate Votes %
Republican John D. Fredericks (Incumbent) 133,780 62.3
Democratic Robert W. Richardson 80,870 37.7
Total votes 214,650 100.0
Turnout  
Republican hold

1926
1926 United States House of Representatives elections[41]
Party Candidate Votes %
Republican Joe Crail (Incumbent) 144,677 86.8
Socialist N. Jackson Wright 21,997 13.2
Total votes 166,674 100.0
Turnout  
Republican hold

1928
1928 United States House of Representatives elections[42]
Party Candidate Votes %
Republican Joe Crail (Incumbent) 301,028 93.9
Democratic Harry Sherr 19,659 6.1
Total votes 320,687 100.0
Turnout  
Republican hold

1930
1930 United States House of Representatives elections[43]
Party Candidate Votes %
Republican Joe Crail (Incumbent) 162,502 75.0
Democratic John F. Dockweiler 54,231 25.0
Total votes 216,733 100
Turnout  
Republican hold

1932
1932 United States House of Representatives elections[44]
Party Candidate Votes %
Democratic Henry E. Stubbs 50,390 55.3
Republican Arthur S. Crites 40,794 44.7
Total votes 91,184 100.0
Turnout  
Democratic gain from Republican

1934
1934 United States House of Representatives elections[45]
Party Candidate Votes %
Democratic Henry E. Stubbs (Incumbent) 68,475 64.4
Republican George R. Bliss 37,860 35.6
Total votes 106,335 100.0
Turnout  
Democratic hold

1936
1936 United States House of Representatives elections[46]
Party Candidate Votes %
Democratic Henry E. Stubbs (Incumbent) 72,476 69.6
Republican George R. Bliss 31,700 30.4
Total votes 104,176 100.0
Turnout  
Democratic hold

1937 (Special)

Democrat Alfred J. Elliott won the special election to replace fellow Democrat Henry E. Stubbs, who died in office.[47]

1937 10th congressional district special election[48]
Party Candidate Votes %
Democratic Alfred J. Elliott 22,321 48.91
Republican Harry A. Hopkins 17,678 38.74
Progressive Al Sessions 5,638 12.35
Total votes 45,637 100
Turnout  
Democratic hold

1938
1938 United States House of Representatives elections[49]
Party Candidate Votes %
Democratic Alfred J. Elliott (Incumbent) 84,791 67.3
Republican F. Fred Hoelscher 41,194 32.7
Total votes 125,985 100.0
Turnout  
Democratic hold

1940
1940 United States House of Representatives elections[50]
Party Candidate Votes %
Democratic Alfred J. Elliott (Incumbent) 125,845 97.0
Communist Louretta Adams 3,826 3.0
Total votes 129,671 100
Turnout  
Democratic hold

1942
1942 United States House of Representatives elections[51]
Party Candidate Votes %
Democratic Alfred J. Elliott (Incumbent) 43,864 100.0
Turnout 43,864 100
Democratic hold

1944
1944 United States House of Representatives elections[52]
Party Candidate Votes %
Democratic Alfred J. Elliott (Incumbent) 60,001 100.0
Turnout 60,001 100
Democratic hold

1946
1946 United States House of Representatives elections[53]
Party Candidate Votes %
Democratic Alfred J. Elliott (Incumbent) 51,843 100.0
Turnout   100
Democratic hold

1948
1948 United States House of Representatives elections[54]
Party Candidate Votes %
Republican Thomas H. Werdel 67,448 71.3
Progressive Sam James Miller 27,168 28.7
Total votes 94,616 100.0
Turnout  
Republican gain from Democratic

1950
1950 United States House of Representatives elections[55]
Party Candidate Votes %
Republican Thomas H. Werdel (Incumbent) 59,313 53.6
Democratic Harlan Hagen 51,409 46.4
Total votes 110,722 100.0
Turnout  
Republican hold

1952
1952 United States House of Representatives elections[56]
Party Candidate Votes %
Republican Charles S. Gubser 106,375 59.2
Democratic Arthur L. Johnson 70,271 39.1
Progressive Betsey K. Fisher 2,939 1.7
Total votes 179,585 100.0
Turnout  
Republican hold

1954
1954 United States House of Representatives elections[57]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 94,418 61.2
Democratic Paul V. Birmingham 59,843 38.8
Total votes 154,261 100.0
Turnout  
Republican hold

1956
1956 United States House of Representatives elections[58]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 128,891 60.7
Democratic William H. Vatcher 83,586 39.3
Total votes 212,477 100.0
Turnout  
Republican hold

1958
1958 United States House of Representatives elections[59]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 118,715 54.6
Democratic Russell B. Bryan 98,894 45.4
Total votes 217,609 100.0
Turnout  
Republican hold

1960
1960 United States House of Representatives elections[60]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 170,063 58.9
Democratic Russell B. Bryan 118,520 41.1
Total votes 288,583 100.0
Turnout  
Republican hold

1962
1962 United States House of Representatives elections[61]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 106,419 57.4
Democratic James P. Thurber Jr. 68,885 42.6
Total votes 175,304 100.0
Turnout  
Republican hold

1964
1964 United States House of Representatives elections[62]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 151,027 63.1
Democratic E. Day Carman 88,240 36.9
Total votes 239,267 100.0
Turnout  
Republican hold

1966
1966 United States House of Representatives elections[63]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 156,549 69.1
Democratic George Leppert 70,013 30.9
Total votes 226,562 100.0
Turnout  
Republican hold

1968
1968 United States House of Representatives elections[64]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 160,204 67.3
Democratic Grayson S. Taketa 73,530 30.9
Peace and Freedom Martin L. Primach 4,276 1.8
Total votes 238,010 100.0
Turnout  
Republican hold

1970
1970 United States House of Representatives elections[65]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 135,864 62.0
Democratic Stuart. D. McLean 80,530 36.8
American Independent Joyce W. Stancliffe 2,651 1.2
Total votes 219,045 100.0
Turnout  
Republican hold

1972
1972 United States House of Representatives elections[66]
Party Candidate Votes %
Republican Charles S. Gubser (Incumbent) 139,850 64.6
Democratic B. Frank Gillette 76,597 35.4
Total votes 216,447 100.0
Turnout  
Republican hold

1974
1974 United States House of Representatives elections[67]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 86,014 77.0
Republican Herb Smith 25,678 23.0
Total votes 111,692 100
Turnout  
Democratic gain from Republican

1976
1976 United States House of Representatives elections[68]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 111,992 72.0
Republican Herb Smith 38,088 24.5
American Independent Edmon V. Kaiser 5,363 3.5
Total votes 155,443 100.0
Turnout  
Democratic hold

1978
1978 United States House of Representatives elections[69]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 84,488 67.1
Republican Rudy Hansen 41,374 32.9
Total votes 125,862 100.0
Turnout  
Democratic hold

1980
1980 United States House of Representatives elections[70]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 102,231 62.1
Republican Joseph M. Lutton 45,987 27.9
Libertarian Joseph Fuhrig 11,904 7.2
American Independent Edmon V. Kaiser 4,421 2.7
Total votes 164,543 100.0
Turnout  
Democratic hold

1982
1982 United States House of Representatives elections[71]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 77,263 62.7
Republican Bob Herriott 41,506 33.7
Libertarian Dale Burrow 2,403 1.9
American Independent Edmon V. Kaiser 2,109 1.7
Total votes 123,281 100.0
Turnout  
Democratic hold

1984
1984 United States House of Representatives elections[72]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 102,469 62.4
Republican Bob Herriott 56,256 34.3
Libertarian Perr Cardestam 2,789 1.7
American Independent Edmon V. Kaiser 2,663 1.6
Total votes 164,177 100.0
Turnout  
Democratic hold

1986
1986 United States House of Representatives elections[73]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 84,240 70.5
Republican Michael R. La Crone 31,826 26.6
Libertarian Perr Cardestam 1,797 1.5
Peace and Freedom Bradley L. Mayer 1,701 1.4
Total votes 119,564 100.0
Turnout  
Democratic hold

1988
1988 United States House of Representatives elections[74]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 142,500 86.2
Libertarian Kennita Watson 22,801 13.8
Total votes 165,301 100.0
Turnout  
Democratic hold

1990
1990 United States House of Representatives elections[75]
Party Candidate Votes %
Democratic Don Edwards (Incumbent) 81,875 62.7
Republican Mark Patrosso 48,747 37.3
No party James (write-in) 15 0.0
Total votes 130,637 100.0
Turnout  
Democratic hold

1992
1992 United States House of Representatives elections[76]
Party Candidate Votes %
Republican Bill Baker 145,702 52.0
Democratic Wendell H. Williams 134,635 48.0
No party Williams (write-in) 55 0.0
No party Janloia (write-in) 37 0.0
Total votes 280,429 100
Turnout  
Republican win (new seat)

1994
1994 United States House of Representatives elections[77]
Party Candidate Votes %
Republican Bill Baker (Incumbent) 138,916 59.30
Democratic Ellen Schwartz 90,523 38.65
Peace and Freedom Craig W. Cooper 4,802 2.05
Total votes 234,241 100.0
Turnout  
Republican hold

1996
1996 United States House of Representatives elections[78]
Party Candidate Votes %
Democratic Ellen Tauscher 137,726 48.7
Republican Bill Baker (Incumbent) 133,633 47.2
Reform John Place 6,354 2.3
Natural Law Valerie Janlois 3,047 1.0
Libertarian Gregory Lyon 2,423 0.8
Total votes 283,183 100.0
Turnout  
Democratic gain from Republican

1998
1998 United States House of Representatives elections[79]
Party Candidate Votes %
Democratic Ellen Tauscher (Incumbent) 127,134 53.46
Republican Charles Ball 103,299 43.44
Natural Law Valerie Janlois 3,941 1.66
Reform John Place 3,435 1.44
Total votes 237,809 100.0
Turnout  
Democratic hold

2000
2000 United States House of Representatives elections[80]
Party Candidate Votes %
Democratic Ellen Tauscher (Incumbent) 160,429 52.7
Republican Claude B. Hutchison Jr. 134,863 44.2
Natural Law Valerie Janlois 9,527 3.1
Total votes 304,819 100.0
Turnout  
Democratic hold

2002
2002 United States House of Representatives elections[81]
Party Candidate Votes %
Democratic Ellen Tauscher (Incumbent) 123,481 75.6
Libertarian Sonia E. Alonso Harden 39,858 24.4
Total votes 163,339 100.0
Turnout  
Democratic hold

2004
2004 United States House of Representatives elections[82]
Party Candidate Votes %
Democratic Ellen Tauscher (Incumbent) 182,750 65.8
Republican Jeff Ketelson 95,349 34.2
Total votes 278,099 100.0
Turnout  
Democratic hold

2006
2006 United States House of Representatives elections[83]
Party Candidate Votes %
Democratic Ellen Tauscher (Incumbent) 130,859 66.5
Republican Darcy Linn 66,069 33.5
Republican Jeff Ketelson (write-in) 50 0.0
Total votes 196,978 100.0
Turnout  
Democratic hold

2008
2008 United States House of Representatives elections[84]
Party Candidate Votes %
Democratic Ellen Tauscher (Incumbent) 192,226 65.2
Republican Nicholas Gerber 91,877 31.1
Peace and Freedom Eugene E. Ruyle 11,062 3.7
Total votes 295,165 100.0
Turnout  
Democratic hold

2009 (Special)
2009 California's 10th congressional district special election[85]
Party Candidate Votes %
Democratic John Garamendi 72,817 52.85
Republican David Harmer 59,017 42.83
Green Jeremy Cloward 2,515 1.83
Peace and Freedom Mary McIlroy 1,846 1.34
American Independent Jerome Denham 1,591 1.15
Total votes 137,786 100.00
Turnout   35.33
Democratic hold

2010
2010 United States House of Representatives elections[86]
Party Candidate Votes %
Democratic John Garamendi (Incumbent) 137,578 58.9
Republican Gary Clift 88,512 37.8
Green Jeremy Cloward 7,716 3.3
Total votes 233,806 100.0
Turnout  
Democratic hold

2012
2012 United States House of Representatives elections[87]
Party Candidate Votes %
Republican Jeff Denham 110,265 52.7
Democratic José M. Hernández 98,934 47.3
Total votes 209,199 100.0
Turnout  
Republican hold

2014
2014 United States House of Representatives elections[87]
Party Candidate Votes %
Republican Jeff Denham (Incumbent) 70,582 56%
Democratic Michael Eggman 55,123 44%
Total votes 125,705 100.0%
Turnout  
Republican hold

2016
2016 United States House of Representatives elections[88]
Party Candidate Votes %
Republican Jeff Denham (Incumbent) 124,671 51.7
Democratic Michael Eggman 116,470 48.3
Total votes 241,141 100.0
Republican hold

2018
Main article: 2018 California's 10th congressional district election
2018 United States House of Representatives elections
Primary election
Party Candidate Votes %
Republican Jeff Denham (Incumbent) 45,719 37.5
Democratic Josh Harder 20,742 17.0
Republican Ted D. Howze 17,723 14.6
Democratic Michael Eggman 12,446 10.2
Democratic Virginia Madueño 11,178 9.2
Democratic Sue Zwahlen 9,945 8.2
Democratic Michael J. "Mike" Barkley 2,904 2.4
Democratic Dotty Nygard (withdrawn) 1,100 0.9
Total votes 121,757 100.0
General election
Democratic Josh Harder 115,945 52.3
Republican Jeff Denham (Incumbent) 105,955 47.7
Total votes 221,900 100.0
Democratic gain from Republican

2020
2020 United States House of Representatives elections
Party Candidate Votes %
Democratic Josh Harder (Incumbent) 166,865 55.2
Republican Ted Howze 135,629 44.8
Total votes 302,494 100.0
Democratic hold

2022
2022 United States House of Representatives elections
Party Candidate Votes %
Democratic Mark DeSaulnier (Incumbent) 198,415 78.9
Green Michael Ernest Kerr 52,965 21.1
Total votes 251,380 100.0
Democratic hold

See also

References
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37.6°N 121.0°W / 37.6; -121.0

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