California's 13th Congressional District

The boundaries of this district may change as a result of California Proposition 50, which voters will decide on November 5, 2025. Click here to read more about the mid-decade redistricting effort in California and other states.

California's 13th Congressional District

Incumbent

Adam Gray

Assumed office: January 3, 2025

California's 13th Congressional District in the United States House of Representatives is represented by Adam Gray (D).

As of the 2020 Census, California representatives represented an average of 761,091 residents. After the 2010 Census, each member represented 704,566 residents.

Elections

2024

See also: California's 13th Congressional District election, 2024

California's 13th Congressional District election, 2024 (March 5 top-two primary)

General election

General election for U.S. House California District 13

Adam Gray defeated incumbent John Duarte in the general election for U.S. House California District 13 on November 5, 2024.

		Candidate	%	Votes
✔		Adam Gray (D)	50.0	105,554
		John Duarte (R)	50.0	105,367

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 210,921
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Nonpartisan primary election

Nonpartisan primary for U.S. House California District 13

Incumbent John Duarte and Adam Gray advanced from the primary for U.S. House California District 13 on March 5, 2024.

		Candidate	%	Votes
✔		John Duarte (R)	54.9	47,219
✔		Adam Gray (D)	45.1	38,754

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 85,973
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Withdrawn or disqualified candidates

• Brad Boyd (D)
• Phil Arballo (D)
• Diego Martinez (R)
• Angelina Sigala (D)

2022

See also: California's 13th Congressional District election, 2022

General election

General election for U.S. House California District 13

John Duarte defeated Adam Gray in the general election for U.S. House California District 13 on November 8, 2022.

		Candidate	%	Votes
✔		John Duarte (R)	50.2	67,060
		Adam Gray (D)	49.8	66,496

---

	There were no incumbents in this race. The results have been certified. Source	Total votes: 133,556
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Nonpartisan primary election

Nonpartisan primary for U.S. House California District 13

John Duarte and Adam Gray defeated Phil Arballo, David Giglio, and Diego Martinez in the primary for U.S. House California District 13 on June 7, 2022.

		Candidate	%	Votes
✔		John Duarte (R)	34.2	26,163
✔		Adam Gray (D)	31.1	23,784
		Phil Arballo (D)	17.1	13,099
		David Giglio (R)	14.8	11,320
		Diego Martinez (R)	2.7	2,026

---

	There were no incumbents in this race. The results have been certified. Source	Total votes: 76,392
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Withdrawn or disqualified candidates

• Angelina Sigala (D)

2020

See also: California's 13th Congressional District election, 2020

General election

General election for U.S. House California District 13

Incumbent Barbara Lee defeated Nikka Piterman in the general election for U.S. House California District 13 on November 3, 2020.

		Candidate	%	Votes
✔		Barbara Lee (D)	90.4	327,863
		Nikka Piterman (R)	9.6	34,955

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 362,818
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Nonpartisan primary election

Nonpartisan primary for U.S. House California District 13

Incumbent Barbara Lee and Nikka Piterman advanced from the primary for U.S. House California District 13 on March 3, 2020.

		Candidate	%	Votes
✔		Barbara Lee (D)	92.6	230,482
✔		Nikka Piterman (R)	7.4	18,553

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 249,035
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

2018

See also: California's 13th Congressional District election, 2018

General election

General election for U.S. House California District 13

Incumbent Barbara Lee defeated Laura Wells in the general election for U.S. House California District 13 on November 6, 2018.

		Candidate	%	Votes
✔		Barbara Lee (D)	88.4	260,580
		Laura Wells (G)	11.6	34,257

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 294,837
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Nonpartisan primary election

Nonpartisan primary for U.S. House California District 13

Incumbent Barbara Lee and Laura Wells advanced from the primary for U.S. House California District 13 on June 5, 2018.

		Candidate	%	Votes
✔		Barbara Lee (D)	99.5	159,751
✔		Laura Wells (G)	0.5	832

---

	Incumbents are bolded and underlined. The results have been certified.	Total votes: 160,583
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

2016

See also: California's 13th Congressional District election, 2016

Heading into the election, Ballotpedia rated this race as safely Democratic. Incumbent Barbara Lee (D) defeated Sue Caro (R) in the general election on November 8, 2016. Both candidates advanced past the top-two primary on June 7, 2016, by default.

U.S. House, California District 13 General Election, 2016

Party		Candidate	Vote %	Votes
	Democratic	Barbara Lee Incumbent	90.8%	293,117
	Republican	Sue Caro	9.2%	29,754
Total Votes				322,871
Source: California Secretary of State

U.S. House, California District 13 Primary, 2016

Party		Candidate	Vote %	Votes
	Democratic	Barbara Lee Incumbent	92%	192,227
	Republican	Sue Caro	8%	16,818
Total Votes				209,045
Source: California Secretary of State

2014

See also: California's 13th Congressional District elections, 2014

The 13th Congressional District of California held an election for the U.S. House of Representatives on November 4, 2014. Incumbent Barbara Lee (D) defeated Dakin Sundeen (R) in the general election.

U.S. House, California District 13 General Election, 2014

Party		Candidate	Vote %	Votes
	Democratic	Barbara Lee Incumbent	88.5%	168,491
	Republican	Dakin Sundeen	11.5%	21,940
Total Votes				190,431
Source: California Secretary of State

2012

See also: California's 13th Congressional District elections, 2012

The 13th Congressional District of California held an election for the U.S. House of Representatives on November 6, 2012. The incumbent from the 9th District, Barbara Lee, won election in the district.

U.S. House, California District 13 General Election, 2012

Party		Candidate	Vote %	Votes
	Democratic	Barbara Lee Incumbent	86.8%	250,436
	Independent	Marilyn M. Singleton	13.2%	38,146
Total Votes				288,582
Source: California Secretary of State "Official Election Results, 2012 General Election"

2010
On November 2, 2010, Fortney Pete Stark won re-election to the United States House. He defeated Forest Baker (R) and Chris Pareja (Write-in) in the general election.

U.S. House, California District 13 General Election, 2010
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	72%	118,278
	Republican	Forest Baker	27.7%	45,575
	Write-in	Chris Pareja	0.3%	525
Total Votes				164,378

2008
On November 4, 2008, Fortney Pete Stark won re-election to the United States House. He defeated Raymond Chui (R) in the general election.

U.S. House, California District 13 General Election, 2008
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	76.4%	166,829
	Republican	Raymond Chui	23.6%	51,447
Total Votes				218,276

2006
On November 7, 2006, Fortney Pete Stark won re-election to the United States House. He defeated George Bruno (R) in the general election.

U.S. House, California District 13 General Election, 2006
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	74.9%	110,756
	Republican	George Bruno	25.1%	37,141
Total Votes				147,897

2004
On November 2, 2004, Fortney Pete Stark won re-election to the United States House. He defeated George Bruno (R) and Mark Stoberg (L) in the general election.

U.S. House, California District 13 General Election, 2004
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	71.6%	144,605
	Republican	George Bruno	24%	48,439
	Libertarian	Mark Stoberg	4.4%	8,877
Total Votes				201,921

2002
On November 5, 2002, Fortney Pete Stark won re-election to the United States House. He defeated Syed Mahmood (R), Mark Stoberg (L), Don Grundmann (American Independent) and John Bambey (Reform) in the general election.

U.S. House, California District 13 General Election, 2002
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	71.1%	86,495
	Republican	Syed Mahmood	22.1%	26,852
	Libertarian	Mark Stoberg	3%	3,703
	American Independent	Don Grundmann	2.3%	2,772
	Reform	John Bambey	1.6%	1,901
Total Votes				121,723

2000
On November 7, 2000, Fortney Pete Stark won re-election to the United States House. He defeated James Goetz (R), Howard Mora (L), Tim Robert Hoehner (Natural Law) and Don Grundmann (American Independent) in the general election.

U.S. House, California District 13 General Election, 2000
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	70.4%	129,012
	Republican	James Goetz	24.3%	44,499
	Libertarian	Howard Mora	2.5%	4,623
	Natural Law	Tim Robert Hoehner	1.4%	2,647
	American Independent	Don Grundmann	1.3%	2,365
Total Votes				183,146

1998
On November 3, 1998, Fortney Pete Stark won re-election to the United States House. He defeated James Goetz (R) and Karnig Beylikjian (Natural Law) in the general election.

U.S. House, California District 13 General Election, 1998
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	71.2%	101,671
	Republican	James Goetz	26.6%	38,050
	Natural Law	Karnig Beylikjian	2.1%	3,066
Total Votes				142,787

1996
On November 5, 1996, Fortney Pete Stark won re-election to the United States House. He defeated James Fay (R) and Terry Savage (L) in the general election.

U.S. House, California District 13 General Election, 1996
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	65.2%	114,408
	Republican	James Fay	30.4%	53,385
	Libertarian	Terry Savage	4.4%	7,746
Total Votes				175,539

1994
On November 8, 1994, Fortney Pete Stark won re-election to the United States House. He defeated Larry Molton (R) and Robert Gough (L) in the general election.

U.S. House, California District 13 General Election, 1994
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	64.6%	97,344
	Republican	Larry Molton	30.2%	45,555
	Libertarian	Robert Gough	5.1%	7,743
Total Votes				150,642

1992
On November 3, 1992, Fortney Pete Stark won re-election to the United States House. He defeated Verne Teyler (R) and Roslyn Allen (P&F) in the general election.

U.S. House, California District 13 General Election, 1992
Party		Candidate	Vote %	Votes
	Democratic	Fortney Pete Stark incumbent	60.2%	123,795
	Republican	Verne Teyler	31.6%	64,953
	Peace and Freedom	Roslyn Allen	8.2%	16,768
Total Votes				205,516

1990
On November 6, 1990, Norman Mineta won re-election to the United States House. He defeated David Smith (R) and John Webster (L) in the general election.

U.S. House, California District 13 General Election, 1990
Party		Candidate	Vote %	Votes
	Democratic	Norman Mineta incumbent	58%	97,286
	Republican	David Smith	35.7%	59,773
	Libertarian	John Webster	6.3%	10,587
Total Votes				167,646

Redistricting

2020-2021

See also: Redistricting in California after the 2020 census

The California Citizens Redistricting Commission voted 14-0 in favor of a new congressional district map on December 20, 2021, and delivered those maps to the secretary of state on December 27, 2021. California was apportioned 52 seats in the U.S. House of Representatives after the 2020 census, a net loss of one seat compared to apportionment after the 2010 census. This map took effect for California's 2022 congressional elections.

How does redistricting in California work? In California, a non-politician commission draws both congressional and state legislative district lines. Established in 2008 by ballot initiative, the commission comprises 14 members: five Democrats, five Republicans, and four belonging to neither party. A panel of state auditors selects the pool of nominees from which the commissioners are appointed. This pool comprises 20 Democrats, 20 Republicans, and 20 belonging to neither party. The majority and minority leaders of both chambers of the state legislature may each remove two members from each of the aforementioned groups. The first eight commission members are selected at random from the remaining nominees. These first eight comprise three Democrats, three Republicans, and two belonging to neither party. The first eight commissioners appoint the remaining six, which must include two Democrats, two Republicans, and two belonging to neither party.

Commissioners must meet the following requirements in order to serve:

1. Members must have voted in at least two of the last three statewide elections.
2. Members cannot have switched party affiliation for at least five years.
3. "Neither commissioners nor immediate family may have been, within 10 years of appointment, a candidate for federal or state office or member of a party central committee; an officer, employee, or paid consultant to a federal or state candidate or party; a registered lobbyist or paid legislative staff; or a donor of more than $2,000 to an elected candidate."
4. Members cannot be "staff, consultants or contractors for state or federal government" while serving as commissioners. The same prohibition applies to the family of commission members.

In order to approve a redistricting plan, nine of the commission's 14 members must vote for it. These nine must include three Democrats, three Republicans, and three belonging to neither party. Maps drawn by the commission may be overturned by public referendum. In the event that a map is overturned by the public, the California Supreme Court must appoint a group to draw a new map.

The California Constitution requires that districts be contiguous. Further, the state constitution mandates that "to the extent possible, [districts] must ... preserve the geographic integrity of cities, counties, neighborhoods and communities of interest." Districts must also "encourage compactness." State Senate and Assembly districts should be nested within each other where possible.

California District 13
until January 2, 2023

Click a district to compare boundaries.

California District 13
starting January 3, 2023

Click a district to compare boundaries.

2010-2011

This is the 13th Congressional District of California after the 2001 redistricting process.

See also: Redistricting in California after the 2010 census

In 2011, the California State Legislature re-drew the congressional districts based on updated population information from the 2010 census.

District analysis

See also: The Cook Political Report's Partisan Voter Index

See also: FiveThirtyEight's elasticity scores

2026

Heading into the 2026 elections, based on results from the 2024 and 2020 presidential elections, the Cook Partisan Voter Index for this district is R+1. This meant that in those two presidential elections, this district's results were 1 percentage points more Democratic than the national average. This made California's 13th the 216th most Democratic district nationally.

2024

Heading into the 2024 elections, based on results from the 2020 and 2016 presidential elections, the Cook Partisan Voter Index for this district was D+4. This meant that in those two presidential elections, this district's results were 4 percentage points more Democratic than the national average. This made California's 13th the 176th most Democratic district nationally.

Daily Kos calculated what the results of the 2020 presidential election in this district would have been following redistricting. Joe Biden (D) would have defeated Donald Trump (R) 54.3%-43.4%.

2022

Heading into the 2022 elections, based on results from the 2020 and 2016 presidential elections, the Cook Partisan Voter Index for this district was D+4. This meant that in those two presidential elections, this district's results were 4 percentage points more Democratic than the national average. This made California's 13th the 176th most Democratic district nationally.

Daily Kos calculated what the results of the 2020 presidential election in this district would have been following redistricting. Joe Biden (D) would have received 54.3% of the vote in this district and Donald Trump (R) would have received 43.4%.

2018

Heading into the 2018 elections, based on results from the 2016 and 2012 presidential elections, the Cook Partisan Voter Index for this district was D+40. This meant that in those two presidential elections, this district's results were 40 percentage points more Democratic than the national average. This made California's 13th Congressional District the fourth most Democratic nationally.

FiveThirtyEight's September 2018 elasticity score for states and congressional districts measured "how sensitive it is to changes in the national political environment." This district's elasticity score was 0.79. This means that for every 1 point the national political mood moved toward a party, the district was expected to move 0.79 points toward that party.

See also

• Redistricting in California
• California's 13th Congressional District election, 2024
• California's 13th Congressional District election, 2022
• California's 13th Congressional District election, 2020
• California's 13th Congressional District election, 2018

External links

• GovTrack District 13

Footnotes

[show]

California's current delegation to the United States Congress

Senators

Alex Padilla (D)

Adam Schiff (D)

Representatives

District 1

Doug LaMalfa (R)

District 2

Jared Huffman (D)

District 3

Kevin Kiley (R)

District 4

Mike Thompson (D)

District 5

Tom McClintock (R)

District 6

Ami Bera (D)

District 7

Doris Matsui (D)

District 8

John Garamendi (D)

District 9

Josh Harder (D)

District 10

Mark DeSaulnier (D)

District 11

Nancy Pelosi (D)

District 12

Lateefah Simon (D)

District 13

Adam Gray (D)

District 14

Eric Swalwell (D)

District 15

Kevin Mullin (D)

District 16

Sam Liccardo (D)

District 17

Ro Khanna (D)

District 18

Zoe Lofgren (D)

District 19

Jimmy Panetta (D)

District 20

Vince Fong (R)

District 21

Jim Costa (D)

District 22

David Valadao (R)

District 23

Jay Obernolte (R)

District 24

Salud Carbajal (D)

District 25

Raul Ruiz (D)

District 26

Julia Brownley (D)

District 27

George Whitesides (D)

District 28

Judy Chu (D)

District 29

Luz Rivas (D)

District 30

Laura Friedman (D)

District 31

Gil Cisneros (D)

District 32

Brad Sherman (D)

District 33

Pete Aguilar (D)

District 34

Jimmy Gomez (D)

District 35

Norma Torres (D)

District 36

Ted Lieu (D)

District 37

Sydney Kamlager-Dove (D)

District 38

Linda Sánchez (D)

District 39

Mark Takano (D)

District 40

Young Kim (R)

District 41

Ken Calvert (R)

District 42

Robert Garcia (D)

District 43

Maxine Waters (D)

District 44

Nanette Barragán (D)

District 45

Derek Tran (D)

District 46

Lou Correa (D)

District 47

Dave Min (D)

District 48

Darrell Issa (R)

District 49

Mike Levin (D)

District 50

Scott Peters (D)

District 51

Sara Jacobs (D)

District 52

Juan Vargas (D)

Democratic Party (45)

Republican Party (9)