Election Results for Contra Costa County, CA -- RightDataUSA.com

2020-2022 Components	Number	Rate
Births:	26,523	11.4
Deaths:	20,583	8.8
Net Migration:	-22,397	-9.6
Net Immigration:	6,555	2.8

Recent Trends
	Votes	Δ Margin	Swing %
2020 vs. 2016	R +36,921	D +60,178	R + 0.4%
D +97,099
2020 vs. 2012	R +16,360	D +109,202	D + 10.2%
D +125,562
2020 vs. 2008	R +16,441	D +92,962	D + 7.8%
D +109,403

2016 vs. 2008	R -20,480	D +32,784	D + 8.3%
D +12,304
How to interpret this table

Click on the Year to view county-level data for that election.

Year	Turnout	Winner			Runner-Up			Other		Total Votes	Diff (St)	Diff (US)	PSV
2020	65%	Joe Biden (D)	416,386	71.6%	Donald Trump* (R)	152,877	26.3%	12,053 [+]	2.1%	581,316	-8	-21	3.32%
[-] Other candidates in 2020: Jo Jorgensen (Lbt) 6,116 (1.1%);
2016	55%	Hillary Clinton (D)	319,287	67.5%	Donald Trump (R)	115,956	24.5%	37,771 [+]	8.0%	473,014	-7	-21	3.32%
[-] Other candidates in 2016: Gary Johnson (Lbt) 16,123 (3.4%); Jill Stein (Grn) 8,637 (1.8%); Evan McMullin (I) 1,355 (0.3%);
2012	54%	Barack Obama* (D)	290,824	66.2%	Mitt Romney (R)	136,517	31.1%	11,804 [+]	2.7%	439,145	-6	-16	3.36%
[-] Other candidates in 2012: Gary Johnson (Lbt) 4,372 (1.0%);
2008	59%	Barack Obama (D)	306,983	67.7%	John McCain (R)	136,436	30.1%	9,825 [+]	2.2%	453,244	-7	-15	3.34%
[-] Other candidates in 2008: Ralph Nader (I) 3,353 (0.7%); Bob Barr (Lbt) 1,868 (0.4%);
2004	56%	John Kerry (D)	257,254	62.3%	George W. Bush* (R)	150,608	36.5%	5,166 [+]	1.3%	413,028	-8	-14	3.33%
[-] Other candidates in 2004: Ralph Nader (I) 0 (0.0%);
2000	55%	Albert Gore, Jr. (D)	224,338	58.8%	George W. Bush (R)	141,373	37.1%	15,767 [+]	4.1%	381,478	-5	-11	3.48%
[-] Other candidates in 2000: Ralph Nader (Grn) 13,067 (3.4%); Pat Buchanan (Ref) 778 (0.2%);
1996	53%	Bill Clinton* (D)	196,512	55.7%	Robert Dole (R)	123,954	35.2%	32,136 [+]	9.1%	352,602	-3	-6	3.52%
[-] Other candidates in 1996: Ross Perot (Ref) 20,416 (5.8%); Ralph Nader (Grn) 7,334 (2.1%); Harry Browne (Lbt) 2,400 (0.7%);
1992	62%	Bill Clinton (D)	194,960	50.9%	George Bush* (R)	112,965	29.5%	74,898 [+]	19.6%	382,823	-3	-8	3.44%
[-] Other candidates in 1992: Ross Perot (I) 72,518 (18.9%);
1988	57%	Michael Dukakis (D)	169,411	51.1%	George Bush (R)	158,652	47.9%	3,448 [+]	1.0%	331,511	-3	-6	3.35%
[-] Other candidates in 1988: Ron Paul (Lbt) 2,105 (0.6%);
1984	60%	Ronald Reagan* (R)	172,331	54.5%	Walter Mondale (D)	140,994	44.6%	2,993	0.9%	316,318	-3	-4	3.33%
[-] Other candidates in 1984:
1980	60%	Ronald Reagan (R)	144,112	50.1%	Jimmy Carter* (D)	107,398	37.3%	36,035 [+]	12.5%	287,545	-3	-1	3.35%
[-] Other candidates in 1980: John Anderson (I) 28,209 (9.8%); Edward Clark (Lbt) 5,175 (1.8%);
1976	62%	Gerald Ford* (R)	126,598	49.3%	Jimmy Carter (D)	123,742	48.2%	6,194 [+]	2.4%	256,534	0	1	3.26%
[-] Other candidates in 1976: Eugene McCarthy (I) 1,546 (0.6%);
1972	67%	Richard Nixon* (R)	139,044	54.1%	George McGovern (D)	111,718	43.5%	6,122 [+]	2.4%	256,884	-1	-7	3.07%
[-] Other candidates in 1972: John Schmitz (Amer) 4,701 (1.8%);
1968	67%	Hubert Humphrey (D)	101,668	46.4%	Richard Nixon (R)	97,486	44.5%	19,763 [+]	9.0%	218,917	-3	1	3.02%
[-] Other candidates in 1968: George Wallace (AIP) 18,330 (8.4%);
1964	62%	Lyndon Johnson* (D)	113,071	63.4%	Barry Goldwater (R)	65,011	36.5%	163	0.1%	178,245	-4	-2	2.53%
[-] Other candidates in 1964:
1960	70%	John Kennedy (D)	93,622	52.9%	Richard Nixon (R)	82,922	46.8%	579	0.3%	177,123	-3	-3	2.72%
[-] Other candidates in 1960:
1956	61%	Dwight Eisenhower* (R)	74,971	51.0%	Adlai Stevenson (D)	71,733	48.8%	347	0.2%	147,051	-4	-6	2.69%
[-] Other candidates in 1956:
1952	66%	Adlai Stevenson (D)	70,416	49.8%	Dwight Eisenhower (R)	70,094	49.6%	786	0.6%	141,296	-7	-6	2.75%
[-] Other candidates in 1952:
1948	51%	Harry Truman* (D)	50,277	55.0%	Thomas Dewey (R)	36,958	40.4%	4,141 [+]	4.5%	91,376	-7	-5	2.27%
[-] Other candidates in 1948: Henry Wallace (Prog) 3,868 (4.2%); Strom Thurmond (StsRts) 0 (0.0%);
1944	60%	Franklin Roosevelt* (D)	47,831	64.0%	Thomas Dewey (R)	26,816	35.9%	138	0.2%	74,785	-7	-10	2.12%
[-] Other candidates in 1944:
1940	72%	Franklin Roosevelt* (D)	30,900	61.8%	Wendell Willkie (R)	18,627	37.2%	513	1.0%	50,040	-4	-8	1.53%
[-] Other candidates in 1940:
1936	59%	Franklin Roosevelt* (D)	26,007	72.3%	Alf Landon (R)	9,604	26.7%	364 [+]	1.0%	35,975	-5	-10	1.36%
[-] Other candidates in 1936: Norman Thomas (Soc) 178 (0.5%); William Lemke (Union) 0 (0.0%);
1932	53%	Franklin Roosevelt (D)	17,218	58.9%	Herbert Hoover* (R)	10,907	37.3%	1,089 [+]	3.7%	29,214	0	-2	1.29%
[-] Other candidates in 1932: Norman Thomas (Soc) 811 (2.8%);
1928	46%	Herbert Hoover (R)	13,495	60.4%	Al Smith (D)	8,573	38.4%	281 [+]	1.3%	22,349	-4	2	1.24%
[-] Other candidates in 1928: Norman Thomas (Soc) 281 (1.3%);
1924	39%	Calvin Coolidge (R)	9,061	54.7%	Robert LaFollette (Prog)	6,231	37.6%	1,281 [+]	7.7%	16,573	-3	1	1.29%
[-] Other candidates in 1924: John Davis (D) 1,114 (6.7%);
1920	40%	Warren Harding (R)	9,041	63.7%	James Cox (D)	3,483	24.6%	1,658 [+]	11.7%	14,182	-2	3	1.50%
[-] Other candidates in 1920: Eugene Debs (Soc) 1,410 (9.9%); Aaron Watkins (Proh) 248 (1.7%); Parley Christiansen (FL) 0 (0.0%);
1916	43%	Woodrow Wilson* (D)	6,092	46.8%	Charles Evans Hughes (R)	5,731	44.0%	1,188 [+]	9.1%	13,011	-2	-2	1.30%
[-] Other candidates in 1916: Allan Benson (Soc) 886 (6.8%); James Hanly (Proh) 302 (2.3%);
1912	34%	Theodore Roosevelt (Prog)	3,539	42.4%	Woodrow Wilson (D)	3,290	39.4%	1,521 [+]	18.2%	8,350	0	-23	1.23%
[-] Other candidates in 1912: Eugene Debs (Soc) 1,300 (15.6%); Eugene Chafin (Proh) 181 (2.2%); William Taft* (R) 40 (0.5%);
1908	29%	William Taft (R)	3,336	60.6%	William J. Bryan (D)	1,599	29.1%	569 [+]	10.3%	5,504	5	9	1.42%
[-] Other candidates in 1908: Eugene Debs (Soc) 438 (8.0%); Eugene Chafin (Proh) 71 (1.3%); Thomas Hisgen (I) 60 (1.1%);
1904	30%	Theodore Roosevelt (R)	2,833	62.6%	Alton Parker (D)	1,257	27.8%	439 [+]	9.7%	4,529	1	6	1.37%
[-] Other candidates in 1904: Eugene Debs (Soc) 391 (8.6%); Silas Swallow (Proh) 48 (1.1%); Thomas Watson (Pop) 0 (0.0%);
1900	32%	William McKinley* (R)	2,165	57.0%	William J. Bryan (D)	1,549	40.8%	83 [+]	2.2%	3,797	3	5	1.25%
[-] Other candidates in 1900: John Woolley (Proh) 0 (0.0%); Eugene Debs (Soc) 0 (0.0%);

* incumbent PSV: percent of state vote

2020 President, Contra Costa County, CA

Candidate

Votes

Pct

Joe Biden (D)

416,386

71.6%

Donald Trump* (R)

152,877

26.3%

Jo Jorgensen (Lbt)

6,116

1.1%

Other

5,937

1.0%

TOTAL

581,316

Turnout: 65%	Diff (St): -8	Diff (US): -21

2016 President, Contra Costa County, CA

Candidate

Votes

Pct

Hillary Clinton (D)

319,287

67.5%

Donald Trump (R)

115,956

24.5%

Gary Johnson (Lbt)

16,123

3.4%

Jill Stein (Grn)

8,637

1.8%

Evan McMullin (I)

1,355

0.3%

Other

11,656

2.5%

TOTAL

473,014

Turnout: 55%	Diff (St): -7	Diff (US): -21

2012 President, Contra Costa County, CA

Candidate

Votes

Pct

Barack Obama* (D)

290,824

66.2%

Mitt Romney (R)

136,517

31.1%

Gary Johnson (Lbt)

4,372

1.0%

Other

7,432

1.7%

TOTAL

439,145

Turnout: 54%	Diff (St): -6	Diff (US): -16

2008 President, Contra Costa County, CA

Candidate

Votes

Pct

Barack Obama (D)

306,983

67.7%

John McCain (R)

136,436

30.1%

Ralph Nader (I)

3,353

0.7%

Bob Barr (Lbt)

1,868

0.4%

Other

4,604

1.0%

TOTAL

453,244

Turnout: 59%	Diff (St): -7	Diff (US): -15

2004 President, Contra Costa County, CA

Candidate

Votes

Pct

George W. Bush* (R)

150,608

36.5%

John Kerry (D)

257,254

62.3%

Other

5,166

1.3%

TOTAL

413,028

Turnout: 56%	Diff (St): -8	Diff (US): -14

2000 President, Contra Costa County, CA

Candidate

Votes

Pct

George W. Bush (R)

141,373

37.1%

Albert Gore, Jr. (D)

224,338

58.8%

Ralph Nader (Grn)

13,067

3.4%

Pat Buchanan (Ref)

778

0.2%

Other

1,922

0.5%

TOTAL

381,478

Turnout: 55%	Diff (St): -5	Diff (US): -11

1996 President, Contra Costa County, CA

Candidate

Votes

Pct

Bill Clinton* (D)

196,512

55.7%

Robert Dole (R)

123,954

35.2%

Ross Perot (Ref)

20,416

5.8%

Ralph Nader (Grn)

7,334

2.1%

Harry Browne (Lbt)

2,400

0.7%

Other

1,986

0.6%

TOTAL

352,602

Turnout: 53%	Diff (St): -3	Diff (US): -6

1992 President, Contra Costa County, CA

Candidate

Votes

Pct

Bill Clinton (D)

194,960

50.9%

George Bush* (R)

112,965

29.5%

Ross Perot (I)

72,518

18.9%

Other

2,380

0.6%

TOTAL

382,823

Turnout: 62%	Diff (St): -3	Diff (US): -8

1988 President, Contra Costa County, CA

Candidate

Votes

Pct

George Bush (R)

158,652

47.9%

Michael Dukakis (D)

169,411

51.1%

Ron Paul (Lbt)

2,105

0.6%

Other

1,343

0.4%

TOTAL

331,511

Turnout: 57%	Diff (St): -3	Diff (US): -6

1984 President, Contra Costa County, CA

Candidate

Votes

Pct

Ronald Reagan* (R)

172,331

54.5%

Walter Mondale (D)

140,994

44.6%

Other

2,993

0.9%

TOTAL

316,318

Turnout: 60%	Diff (St): -3	Diff (US): -4

1980 President, Contra Costa County, CA

Candidate

Votes

Pct

Ronald Reagan (R)

144,112

50.1%

Jimmy Carter* (D)

107,398

37.3%

John Anderson (I)

28,209

9.8%

Edward Clark (Lbt)

5,175

1.8%

Other

2,651

0.9%

TOTAL

287,545

Turnout: 60%	Diff (St): -3	Diff (US): -1

1976 President, Contra Costa County, CA

Candidate

Votes

Pct

Jimmy Carter (D)

123,742

48.2%

Gerald Ford* (R)

126,598

49.3%

Eugene McCarthy (I)

1,546

0.6%

Other

4,648

1.8%

TOTAL

256,534

Turnout: 62%	Diff (St): 0	Diff (US): 1

1972 President, Contra Costa County, CA

Candidate

Votes

Pct

Richard Nixon* (R)

139,044

54.1%

George McGovern (D)

111,718

43.5%

John Schmitz (Amer)

4,701

1.8%

Other

1,421

0.6%

TOTAL

256,884

Turnout: 67%	Diff (St): -1	Diff (US): -7

1968 President, Contra Costa County, CA

Candidate

Votes

Pct

Richard Nixon (R)

97,486

44.5%

Hubert Humphrey (D)

101,668

46.4%

George Wallace (AIP)

18,330

8.4%

Other

1,433

0.7%

TOTAL

218,917

Turnout: 67%	Diff (St): -3	Diff (US): 1

1964 President, Contra Costa County, CA

Candidate

Votes

Pct

Lyndon Johnson* (D)

113,071

63.4%

Barry Goldwater (R)

65,011

36.5%

Other

163

0.1%

TOTAL

178,245

Turnout: 62%	Diff (St): -4	Diff (US): -2

1960 President, Contra Costa County, CA

Candidate

Votes

Pct

John Kennedy (D)

93,622

52.9%

Richard Nixon (R)

82,922

46.8%

Other

579

0.3%

TOTAL

177,123

Turnout: 70%	Diff (St): -3	Diff (US): -3

1956 President, Contra Costa County, CA

Candidate

Votes

Pct

Dwight Eisenhower* (R)

74,971

51.0%

Adlai Stevenson (D)

71,733

48.8%

Other

347

0.2%

TOTAL

147,051

Turnout: 61%	Diff (St): -4	Diff (US): -6

1952 President, Contra Costa County, CA

Candidate

Votes

Pct

Dwight Eisenhower (R)

70,094

49.6%

Adlai Stevenson (D)

70,416

49.8%

Other

786

0.6%

TOTAL

141,296

Turnout: 66%	Diff (St): -7	Diff (US): -6

1948 President, Contra Costa County, CA

Candidate

Votes

Pct

Harry Truman* (D)

50,277

55.0%

Thomas Dewey (R)

36,958

40.4%

Henry Wallace (Prog)

3,868

4.2%

Other

273

0.3%

TOTAL

91,376

Turnout: 51%	Diff (St): -7	Diff (US): -5

1944 President, Contra Costa County, CA

Candidate

Votes

Pct

Franklin Roosevelt* (D)

47,831

64.0%

Thomas Dewey (R)

26,816

35.9%

Other

138

0.2%

TOTAL

74,785

Turnout: 60%	Diff (St): -7	Diff (US): -10

1940 President, Contra Costa County, CA

Candidate

Votes

Pct

Franklin Roosevelt* (D)

30,900

61.8%

Wendell Willkie (R)

18,627

37.2%

Other

513

1.0%

TOTAL

50,040

Turnout: 72%	Diff (St): -4	Diff (US): -8

1936 President, Contra Costa County, CA

Candidate

Votes

Pct

Franklin Roosevelt* (D)

26,007

72.3%

Alf Landon (R)

9,604

26.7%

Norman Thomas (Soc)

178

0.5%

Other

186

0.5%

TOTAL

35,975

Turnout: 59%	Diff (St): -5	Diff (US): -10

1932 President, Contra Costa County, CA

Candidate

Votes

Pct

Franklin Roosevelt (D)

17,218

58.9%

Herbert Hoover* (R)

10,907

37.3%

Norman Thomas (Soc)

811

2.8%

Other

278

1.0%

TOTAL

29,214

Turnout: 53%	Diff (St): 0	Diff (US): -2

1928 President, Contra Costa County, CA

Candidate

Votes

Pct

Herbert Hoover (R)

13,495

60.4%

Al Smith (D)

8,573

38.4%

Norman Thomas (Soc)

281

1.3%

TOTAL

22,349

Turnout: 46%	Diff (St): -4	Diff (US): 2

1924 President, Contra Costa County, CA

Candidate

Votes

Pct

Calvin Coolidge (R)

9,061

54.7%

John Davis (D)

1,114

6.7%

Robert LaFollette (Prog)

6,231

37.6%

Other

167

1.0%

TOTAL

16,573

Turnout: 39%	Diff (St): -3	Diff (US): 1

1920 President, Contra Costa County, CA

Candidate

Votes

Pct

Warren Harding (R)

9,041

63.7%

James Cox (D)

3,483

24.6%

Eugene Debs (Soc)

1,410

9.9%

Aaron Watkins (Proh)

248

1.7%

TOTAL

14,182

Turnout: 40%	Diff (St): -2	Diff (US): 3

1916 President, Contra Costa County, CA

Candidate

Votes

Pct

Woodrow Wilson* (D)

6,092

46.8%

Charles Evans Hughes (R)

5,731

44.0%

Allan Benson (Soc)

886

6.8%

James Hanly (Proh)

302

2.3%

TOTAL

13,011

Turnout: 43%	Diff (St): -2	Diff (US): -2

1912 President, Contra Costa County, CA

Candidate

Votes

Pct

Woodrow Wilson (D)

3,290

39.4%

Theodore Roosevelt (Prog)

3,539

42.4%

William Taft* (R)

0.5%

Eugene Debs (Soc)

1,300

15.6%

Eugene Chafin (Proh)

181

2.2%

TOTAL

8,350

Turnout: 34%	Diff (St): 0	Diff (US): -23

1908 President, Contra Costa County, CA

Candidate

Votes

Pct

William Taft (R)

3,336

60.6%

William J. Bryan (D)

1,599

29.1%

Eugene Debs (Soc)

438

8.0%

Eugene Chafin (Proh)

1.3%

Thomas Hisgen (I)

1.1%

TOTAL

5,504

Turnout: 29%	Diff (St): 5	Diff (US): 9

1904 President, Contra Costa County, CA

Candidate

Votes

Pct

Theodore Roosevelt (R)

2,833

62.6%

Alton Parker (D)

1,257

27.8%

Eugene Debs (Soc)

391

8.6%

Silas Swallow (Proh)

1.1%

TOTAL

4,529

Turnout: 30%	Diff (St): 1	Diff (US): 6

1900 President, Contra Costa County, CA

Candidate

Votes

Pct

William McKinley* (R)

2,165

57.0%

William J. Bryan (D)

1,549

40.8%

Other

2.2%

TOTAL

3,797

Turnout: 32%	Diff (St): 3	Diff (US): 5

* incumbent

Historical Statewide Election Results for Contra Costa County, CA

Click on the Year to view county-level data for that election.

Year	Type	Turnout	Winner			Runner-Up			Other		Total Votes	Diff	PSV
2022	S3	43%	Alex Padilla* (D)	267,331	69.7%	Mark Meuser (R)	116,122	30.3%	0	0.0%	383,453	-9	3.54%
[-] Other candidates in 2022:
2022	G	43%	Gavin Newsom* (D)	265,371	68.3%	Brian Dahle (R)	123,132	31.7%	0	0.0%	388,503	-9	3.55%
[-] Other candidates in 2022:

2018	S1	43%	Dianne Feinstein* (D)	222,349	58.3%	Kevin DeLeon (D)	158,748	41.7%	0	0.0%	381,097	n/a	3.43%
[-] Other candidates in 2018:
2018	G	47%	Gavin Newsom (D)	283,805	68.2%	John H. Cox (R)	132,345	31.8%	0	0.0%	416,150	-6	3.34%
[-] Other candidates in 2018:
2016	S3	48%	Kamala Harris (D)	282,587	69.4%	Loretta Sanchez (D)	124,731	30.6%	0	0.0%	407,318	n/a	3.33%
[-] Other candidates in 2016:
2014	G	30%	Jerry Brown* (D)	174,403	68.6%	Neel Kashkari (R)	79,660	31.4%	0	0.0%	254,063	-9	3.47%
[-] Other candidates in 2014:
2012	S1	53%	Dianne Feinstein* (D)	300,194	70.1%	Elizabeth Emken (R)	128,310	29.9%	0	0.0%	428,504	-8	3.41%
[-] Other candidates in 2012:
2010	S3	44%	Barbara Boxer* (D)	206,270	59.7%	Carly Fiorina (R)	123,934	35.9%	15,285 [+]	4.4%	345,489	-6	3.45%
[-] Other candidates in 2010: Gail Lightfoot (Libertarian) 4,996 (1.4%); Duane Roberts (Green) 3,607 (1.0%); Ed Noonan (American Independent) 3,492 (1.0%); Marsha Feinland (Peace & Freedom) 3,181 (0.9%); Other (Write-in) 9 (0.0%);
2010	G	44%	Jerry Brown (D)	211,125	60.6%	Meg Whitman (R)	123,606	35.5%	13,420 [+]	3.9%	348,151	-5	3.45%
[-] Other candidates in 2010: Laura Wells (Green) 3,971 (1.1%); Chelene Nightingale (American Independent) 3,880 (1.1%); Dale Ogden (Libertarian) 3,360 (1.0%); Carlos Alvarez (Peace & Freedom) 2,209 (0.6%);

2006	S1	40%	Dianne Feinstein* (D)	205,516	68.5%	Dick Mountjoy (R)	80,764	26.9%	13,818 [+]	4.6%	300,098	-8	3.51%
[-] Other candidates in 2006: Todd Chretien (Green) 5,405 (1.8%); Michael Metti (Libertarian) 3,399 (1.1%); Marsha Feinland (Peace & Freedom) 2,659 (0.9%); Don Grundmann (American Independent) 2,355 (0.8%);
2006	G	40%	Arnold Schwarzenegger* (R)	158,565	52.4%	Phil Angelides (D)	128,578	42.5%	15,370 [+]	5.1%	302,513	-3	3.49%
[-] Other candidates in 2006: Peter Camejo (Green) 8,529 (2.8%); Art Olivier (Libertarian) 2,725 (0.9%); Janice Jordan (Peace & Freedom) 2,169 (0.7%); Ed Noonan (American Independent) 1,932 (0.6%); Other (Write-in) 15 (0.0%);
2004	S3	56%	Barbara Boxer* (D)	258,905	63.5%	Bill Jones (R)	135,559	33.2%	13,321 [+]	3.3%	407,785	-5	3.38%
[-] Other candidates in 2004: Marsha Feinland (Peace & Freedom) 6,044 (1.5%); Jim Gray (Libertarian) 5,185 (1.3%); Don Grundmann (American Independent) 2,090 (0.5%); Other (Write-in) 2 (0.0%);
2003	G	40%	Arnold Schwarzenegger (R)	114,187	39.5%	Cruz Bustamante (D)	110,824	38.4%	63,773 [+]	22.1%	288,784	8	3.34%
[-] Other candidates in 2003: Tom McClintock (R) 42,152 (14.6%); Peter Camejo (Green) 11,229 (3.9%); Peter Ueberroth (R) 8,320 (2.9%); Arianna Huffington (I) 2,072 (0.7%);
2002	G	37%	Gray Davis* (D)	140,975	53.2%	Bill Simon (R)	94,487	35.7%	29,406 [+]	11.1%	264,868	-7	3.54%
[-] Other candidates in 2002: Peter Camejo (Green) 16,676 (6.3%); Gary Copeland (Libertarian) 5,894 (2.2%); Ron Gulke (American Independent) 3,905 (1.5%); Iris Adam (Natural Law) 2,931 (1.1%);
2000	S1	54%	Dianne Feinstein* (D)	232,109	61.6%	Tom Campbell (R)	125,188	33.2%	19,491 [+]	5.2%	376,788	-3	3.55%
[-] Other candidates in 2000: Medea Benjamin (Green) 8,670 (2.3%); Gail Lightfoot (Libertarian) 4,438 (1.2%); Diane Templin (American Independent) 3,075 (0.8%); Jose Camahort (Reform) 1,945 (0.5%); Brian Rees (Natural Law) 1,363 (0.4%);

1998	S3	44%	Barbara Boxer* (D)	172,595	57.5%	Matt Fong (R)	117,922	39.3%	9,519 [+]	3.2%	300,036	-4	3.61%
[-] Other candidates in 1998: Timothy Erich (Reform) 2,833 (0.9%); Ted Brown (Libertarian) 2,806 (0.9%); Brian Rees (Natural Law) 1,378 (0.5%); Joseph Perrin (American Independent) 1,371 (0.5%); Ophie Beltran (Peace & Freedom) 1,131 (0.4%);
1998	G	45%	Gray Davis (D)	190,200	62.8%	Dan Lungren (R)	103,686	34.2%	8,867 [+]	2.9%	302,753	-4	3.61%
[-] Other candidates in 1998: Dan Hamburg (Green) 3,239 (1.1%); Steve Kubby (Libertarian) 2,241 (0.7%); Gloria La Riva (Peace & Freedom) 1,399 (0.5%); Harold Bloomfield (Natural Law) 1,020 (0.3%); Nathan Johnson (American Independent) 967 (0.3%); Other (Write-in) 1 (0.0%);
1994	S1	46%	Dianne Feinstein* (D)	170,256	57.9%	Michael Huffington (R)	105,854	36.0%	17,761 [+]	6.0%	293,871	-9	3.45%
[-] Other candidates in 1994: Elizabeth Barron (Peace & Freedom) 6,056 (2.1%); Richard Boddie (Libertarian) 4,437 (1.5%); Paul Meeuwenberg (American Independent) 3,756 (1.3%); Barbara Blong (Green) 3,510 (1.2%); Other (Write-in) 2 (0.0%);
1994	G	47%	Pete Wilson* (R)	154,482	51.5%	Kathleen Brown (D)	135,133	45.0%	10,525 [+]	3.5%	300,140	-4	3.46%
[-] Other candidates in 1994: Dick Rider (Libertarian) 4,483 (1.5%); Jerry McCready (American Independent) 3,998 (1.3%); Gloria La Riva (Peace & Freedom) 2,039 (0.7%); Other (Write-in) 5 (0.0%);
1992	S3	59%	Barbara Boxer (D)	203,563	55.2%	Bruce Herschensohn (R)	131,923	35.8%	33,466 [+]	9.1%	368,952	-7	3.42%
[-] Other candidates in 1992: Jerry McCready (American Independent) 13,462 (3.6%); Genevieve Torres (Peace & Freedom) 11,290 (3.1%); June Genis (Libertarian) 8,711 (2.4%); Other (Write-in) 3 (0.0%);
1992	S1	59%	Dianne Feinstein (D)	229,988	63.0%	John Seymour (R)	115,507	31.6%	19,803 [+]	5.4%	365,298	-6	3.39%
[-] Other candidates in 1992: Gerald Horne (Peace & Freedom) 7,011 (1.9%); Paul Meeuwenberg (American Independent) 6,470 (1.8%); Richard Boddie (Libertarian) 6,320 (1.7%); Other (Write-in) 2 (0.0%);
1990	G	45%	Dianne Feinstein (D)	144,268	52.9%	Pete Wilson (R)	119,901	43.9%	8,714 [+]	3.2%	272,883	-5	3.54%
[-] Other candidates in 1990: Dennis Thompson (Libertarian) 3,703 (1.4%); Jerry McCready (American Independent) 2,759 (1.0%); Maria Munoz (Peace & Freedom) 2,235 (0.8%); Other (Write-in) 17 (0.0%);

1988	S1	57%	Pete Wilson* (R)	168,760	51.1%	Leo McCarthy (D)	152,714	46.2%	8,785 [+]	2.7%	330,259	-2	3.39%
[-] Other candidates in 1988: Elizabeth Munoz (Peace & Freedom) 4,245 (1.3%); Jack Dean (Libertarian) 2,549 (0.8%); Merton Short (American Independent) 1,991 (0.6%);
1986	S3	45%	Alan Cranston* (D)	126,673	50.5%	Ed Zschau (R)	118,940	47.4%	5,075 [+]	2.0%	250,688	0	3.39%
[-] Other candidates in 1986: Ed Vallen (American) 2,334 (0.9%); Breck McKinley (Libertarian) 1,896 (0.8%); Paul Kangas (Peace & Freedom) 845 (0.3%);
1986	G	46%	George Deukmejian* (R)	159,105	63.3%	Tom Bradley (D)	87,117	34.7%	5,086 [+]	2.0%	251,308	3	3.38%
[-] Other candidates in 1986: Gary Miller (American Independent) 1,951 (0.8%); Maria Munoz (Peace & Freedom) 1,644 (0.7%); Joseph Fuhrig (Libertarian) 1,491 (0.6%);
1982	S1	50%	Pete Wilson (R)	131,875	52.3%	Jerry Brown (D)	110,813	44.0%	9,352 [+]	3.7%	252,040	1	3.23%
[-] Other candidates in 1982: Joseph Fuhrig (Libertarian) 3,590 (1.4%); David Wald (Peace & Freedom) 3,091 (1.2%); Theresa Dietrich (American Independent) 2,671 (1.1%);
1982	G	51%	George Deukmejian (R)	126,460	49.8%	Tom Bradley (D)	119,712	47.2%	7,616 [+]	3.0%	253,788	1	3.22%
[-] Other candidates in 1982: Dan Dougherty (Libertarian) 3,167 (1.2%); Elizabeth Martinez (Peace & Freedom) 2,249 (0.9%); James Griffin (American Independent) 2,200 (0.9%);
1980	S3	59%	Alan Cranston* (D)	170,685	60.3%	Paul Gann (R)	95,943	33.9%	16,371 [+]	5.8%	282,999	-3	3.40%
[-] Other candidates in 1980: David Bergland (Libertarian) 6,253 (2.2%); David Wald (Peace & Freedom) 5,759 (2.0%); James Griffin (American Independent) 4,359 (1.5%);

1978	G	53%	Jerry Brown* (D)	122,565	54.3%	Evelle Younger (R)	80,821	35.8%	22,447 [+]	9.9%	225,833	-1	3.26%
[-] Other candidates in 1978: Ed Clark (I) 17,989 (8.0%); Theresa Dietrich (American Independent) 2,250 (1.0%); Marilyn Seals (Peace & Freedom) 2,208 (1.0%);
1976	S1	62%	Sam Hayakawa (R)	129,008	50.4%	John Tunney* (D)	121,195	47.3%	5,857 [+]	2.3%	256,060	0	3.43%
[-] Other candidates in 1976: David Wald (Peace & Freedom) 3,016 (1.2%); Jack McCoy (American Independent) 1,987 (0.8%); Omari Musa (I) 854 (0.3%);
1974	S3	49%	Alan Cranston* (D)	129,472	65.8%	Bill Richardson (R)	62,039	31.5%	5,240 [+]	2.7%	196,751	-5	3.22%
[-] Other candidates in 1974: Jack McCoy (American Independent) 5,240 (2.7%); Gayle Justice (Peace & Freedom) 0 (0.0%);
1974	G	50%	Houston Flournoy (R)	99,470	49.5%	Jerry Brown (D)	97,038	48.3%	4,347 [+]	2.2%	200,855	2	3.21%
[-] Other candidates in 1974: Edmon Kaiser (American Independent) 4,347 (2.2%); Elizabeth Keathley (Peace & Freedom) 0 (0.0%);
1970	S1	58%	John Tunney (D)	111,089	55.4%	George Murphy* (R)	86,528	43.1%	3,023 [+]	1.5%	200,640	-1	3.09%
[-] Other candidates in 1970: Charles Ripley (American Independent) 3,023 (1.5%); Robert Scheer (Peace & Freedom) 0 (0.0%);
1970	G	58%	Ronald Reagan* (R)	106,965	53.2%	Jess Unruh (D)	91,156	45.3%	3,123 [+]	1.6%	201,244	0	3.09%
[-] Other candidates in 1970: William Shearer (American Independent) 1,800 (0.9%); Ricardo Romo (Peace & Freedom) 1,323 (0.7%);

1968	S3	66%	Alan Cranston (D)	116,698	54.4%	Max Rafferty (R)	95,657	44.6%	2,204 [+]	1.0%	214,559	-2	3.02%
[-] Other candidates in 1968: Paul Jacobs (Peace & Freedom) 2,204 (1.0%);
1966	G	64%	Ronald Reagan (R)	107,543	54.8%	Pat Brown* (D)	87,525	44.6%	1,217 [+]	0.6%	196,285	-3	3.02%
[-] Other candidates in 1966: Other (Write-in) 1,217 (0.6%);
1964	S1	66%	Pierre Salinger* (D)	95,421	50.4%	George Murphy (R)	93,812	49.6%	48 [+]	0.0%	189,281	-2	2.69%
[-] Other candidates in 1964: Other (Write-in) 48 (0.0%);
1962	S3	59%	Thomas Kuchel* (R)	87,916	55.5%	Richard Richards (D)	70,403	44.4%	197 [+]	0.1%	158,516	-1	2.81%
[-] Other candidates in 1962: Howard Jarvis (I) 197 (0.1%); Linus Paulding (I) 0 (0.0%);
1962	G	61%	Pat Brown* (D)	91,150	55.5%	Richard Nixon (R)	71,192	43.3%	1,935 [+]	1.2%	164,277	-3	2.81%
[-] Other candidates in 1962: Robert Wyckoff (Prohibition) 1,935 (1.2%);

*: incumbent +: ran on additional party lines Type: G: Governor; S1,S2,S3: Senate Class 1, 2 or 3
italics: special election RO: runoff election PSV: percent of state vote

Historical U.S. House Election Results for Contra Costa County, CA

Click on the District to view county-level data for that election (where available).

2022 Census data
White:	460,573	39.81%	8.1%
Black:	99,273	8.58%	6.1%
Indian:	3,096	0.27%	3.8%
Asian:	231,773	20.03%	51.2%
2+ races:	50,443	4.36%	27.5%
Hispanic:	311,808	26.95%	22.0%

Total non-White:	696,393	60.19%	27.1%

Change in White population:	-40,350	-3.8
Change in Non-White pop.:	148,291	14.1

Date	District	Winner			Runner-Up			Other		Total Votes
2022-11-08	CA08	John Garamendi* (D)	86,998	80.5%	Rudy Recile (R)	21,098	19.5%	0	0.0%	108,096
2022-11-08	CA09	Tom Patti (R)	3,860	58.1%	Josh Harder* (D)	2,788	41.9%	0	0.0%	6,648
2022-11-08	CA10	Mark DeSaulnier* (D)	190,168	79.0%	Michael Kerr (Green)	50,562	21.0%	0	0.0%	240,730
County Total for 2022-11-08:										355,474

2020-11-03	CA05	Mike Thompson* (D)	37,068	77.2%	Scott Giblin (R)	10,966	22.8%	0	0.0%	48,034
2020-11-03	CA09	Jerry McNerney* (D)	58,693	59.5%	Tony Amador (R)	39,905	40.5%	0	0.0%	98,598
2020-11-03	CA11	Mark DeSaulnier* (D)	271,063	73.0%	Nisha Sharma (R)	100,293	27.0%	0	0.0%	371,356
2020-11-03	CA15	Eric Swalwell* (D)	29,069	67.5%	Allison Hayden (R)	14,008	32.5%	0	0.0%	43,077
County Total for 2020-11-03:										561,065

2018-11-06	CA05	Mike Thompson* (D)	25,940	77.9%	Anthony Mills (I)	7,352	22.1%	0	0.0%	33,292
2018-11-06	CA09	Jerry McNerney* (D)	39,093	60.6%	Marla Livengood (R)	25,412	39.4%	0	0.0%	64,505
2018-11-06	CA11	Mark DeSaulnier* (D)	204,369	74.1%	John Fitzgerald (R)	71,312	25.9%	0	0.0%	275,681
2018-11-06	CA15	Eric Swalwell* (D)	20,366	69.2%	Rudy Peters (R)	9,056	30.8%	0	0.0%	29,422
County Total for 2018-11-06:										402,900

2016-11-08	CA05	Mike Thompson* (D)	28,349	76.8%	Carlos Santamaria (R)	8,552	23.2%	0	0.0%	36,901
2016-11-08	CA09	Jerry McNerney* (D)	43,867	60.5%	Tony Amador (R)	28,629	39.5%	0	0.0%	72,496
2016-11-08	CA11	Mark DeSaulnier* (D)	214,868	72.1%	Roger Petersen (R)	83,341	27.9%	0	0.0%	298,209
2016-11-08	CA15	Eric Swalwell* (D)	21,572	67.9%	Danny Turner (R)	10,206	32.1%	0	0.0%	31,778
County Total for 2016-11-08:										439,384

2014-11-04	CA05	Mike Thompson* (D)	14,941	76.2%	James Hinton (I)	4,678	23.8%	0	0.0%	19,619
2014-11-04	CA09	Jerry McNerney* (D)	20,056	56.7%	Tony Amador (R)	15,337	43.3%	0	0.0%	35,393
2014-11-04	CA11	Mark DeSaulnier (D)	117,502	67.3%	Tue Phan (R)	57,160	32.7%	0	0.0%	174,662
2014-11-04	CA15	Eric Swalwell* (D)	9,978	61.6%	Hugh Bussell (R)	6,216	38.4%	0	0.0%	16,194
County Total for 2014-11-04:										245,868

2012-11-06	CA05	Mike Thompson* (D)	27,045	76.5%	Randy Loftin (R)	8,297	23.5%	0	0.0%	35,342
2012-11-06	CA09	Jerry McNerney* (D)	39,162	59.9%	Ricky Gill (R)	26,203	40.1%	0	0.0%	65,365
2012-11-06	CA11	George Miller* (D)	200,743	69.7%	Virginia Fuller (R)	87,136	30.3%	0	0.0%	287,879
2012-11-06	CA15	Eric Swalwell (D)	26,131	70.4%	Pete Stark* (D)	11,001	29.6%	0	0.0%	37,132
County Total for 2012-11-06:										425,718

2010-11-02	CA07	George Miller* (D)	80,044	74.0%	Rick Tubbs (R)	28,193	26.0%	0	0.0%	108,237
2010-11-02	CA10	John Garamendi* (D)	100,615	60.8%	Gary Clift (R)	59,326	35.9%	5,470	3.3%	165,411
2010-11-02	CA11	Jerry McNerney* (D)	30,210	48.6%	David Harmer (R)	30,118	48.5%	1,808	2.9%	62,136
County Total for 2010-11-02:										335,784

2009-11-03 sp	CA10	John Garamendi (D)	54,943	54.6%	David Harmer (R)	41,486	41.3%	4,115	4.1%	100,544
County Total for 2009-11-03:										100,544

2008-11-04	CA07	George Miller* (D)	108,016	76.4%	Roger Petersen (R)	25,926	18.3%	7,507	5.3%	141,449
2008-11-04	CA10	Ellen Tauscher* (D)	137,367	66.9%	Nicholas Gerber (R)	60,873	29.6%	7,221	3.5%	205,461
2008-11-04	CA11	Jerry McNerney* (D)	42,057	55.8%	Dean Andal (R)	33,378	44.2%	2	0.0%	75,437
County Total for 2008-11-04:										422,347

2006-11-07	CA07	George Miller* (D)	70,946	86.5%	Camden McConnell (R)	11,111	13.5%	0	0.0%	82,057
2006-11-07	CA10	Ellen Tauscher* (D)	93,552	68.4%	Darcy Linn (R)	43,184	31.6%	21	0.0%	136,757
2006-11-07	CA11	Jerry McNerney (D)	27,433	54.2%	Richard Pombo* (R)	23,150	45.8%	0	0.0%	50,583
County Total for 2006-11-07:										269,397

2004-11-02	CA07	George Miller* (D)	106,981	80.1%	Charles Hargrave (R)	26,640	19.9%	0	0.0%	133,621
2004-11-02	CA10	Ellen Tauscher* (D)	132,190	67.6%	Jeff Ketelson (R)	63,373	32.4%	0	0.0%	195,563
2004-11-02	CA11	Richard Pombo* (R)	39,385	57.6%	Jerry McNerney (D)	29,022	42.4%	0	0.0%	68,407
County Total for 2004-11-02:										397,591

2002-11-05	CA07	George Miller* (D)	63,251	74.8%	Charles Hargrave (R)	18,942	22.4%	2,399	2.8%	84,592
2002-11-05	CA10	Ellen Tauscher* (D)	93,298	76.6%	Sonia Harden (Libertarian)	28,464	23.4%	0	0.0%	121,762
2002-11-05	CA11	Richard Pombo* (R)	24,587	56.6%	Elaine Shaw (D)	18,858	43.4%	0	0.0%	43,445
County Total for 2002-11-05:										249,799

2000-11-07	CA07	George Miller* (D)	120,438	77.2%	Christopher Hoffman (R)	31,804	20.4%	3,701	2.4%	155,943
2000-11-07	CA10	Ellen Tauscher* (D)	112,314	52.6%	Claude Hutchison, Jr. (R)	94,807	44.4%	6,395	3.0%	213,516
County Total for 2000-11-07:										369,459

1998-11-03	CA07	George Miller* (D)	95,204	77.4%	Norman Reece (R)	27,851	22.6%	0	0.0%	123,055
1998-11-03	CA10	Ellen Tauscher* (D)	90,150	53.5%	Charles Ball (R)	73,446	43.6%	4,954	2.9%	168,550
County Total for 1998-11-03:										291,605

1996-11-05	CA07	George Miller* (D)	108,805	73.2%	Norman Reece (R)	31,311	21.1%	8,505	5.7%	148,621
1996-11-05	CA10	Ellen Tauscher (D)	96,269	48.6%	Bill Baker* (R)	93,928	47.4%	8,042	4.1%	198,239
County Total for 1996-11-05:										346,860

1994-11-08	CA07	George Miller* (D)	89,227	70.6%	Charles Hughes (R)	33,690	26.7%	3,446	2.7%	126,363
1994-11-08	CA10	Bill Baker* (R)	97,573	59.4%	Ellen Schwartz (D)	63,598	38.7%	2,992	1.8%	164,163
County Total for 1994-11-08:										290,526

1992-11-03	CA07	George Miller* (D)	117,751	72.4%	Dave Scholl (R)	37,982	23.3%	7,015	4.3%	162,748
1992-11-03	CA10	Bill Baker (R)	102,417	53.0%	Wendell Williams (D)	90,716	47.0%	49	0.0%	193,182
County Total for 1992-11-03:										355,930

Year	Total	Republican		Democrat		Other		R/D Edge	R/D Edge %	VAPOP %
2022	701,969	127,353	18.1%	377,431	53.8%	197,185	28.1%	Dem +250,078	Dem +35.6%	78%
2020	703,021	134,553	19.1%	369,254	52.5%	199,214	28.3%	Dem +234,701	Dem +33.4%	78%
2018	621,309	123,425	19.9%	303,591	48.9%	194,293	31.3%	Dem +180,166	Dem +29.0%	71%
2016	607,515	132,405	21.8%	306,029	50.4%	169,081	27.8%	Dem +173,624	Dem +28.6%	71%
2014	527,521	126,134	23.9%	258,862	49.1%	142,525	27.0%	Dem +132,728	Dem +25.2%	63%
2012	556,351	137,025	24.6%	275,757	49.6%	143,569	25.8%	Dem +138,732	Dem +24.9%	69%
2010	533,825	140,211	26.3%	265,842	49.8%	127,772	23.9%	Dem +125,631	Dem +23.5%	68%
2008	527,145	140,864	26.7%	263,853	50.1%	122,428	23.2%	Dem +122,989	Dem +23.3%	68%
2006	486,441	144,015	29.6%	234,084	48.1%	108,342	22.3%	Dem +90,069	Dem +18.5%	65%
2004	504,505	153,564	30.4%	243,567	48.3%	107,374	21.3%	Dem +90,003	Dem +17.8%	69%
2002	480,438	154,379	32.1%	235,797	49.1%	90,262	18.8%	Dem +81,418	Dem +16.9%	67%
2000	494,954	159,872	32.3%	244,315	49.4%	90,767	18.3%	Dem +84,443	Dem +17.1%	71%
1998	492,730	166,848	33.9%	243,205	49.4%	82,677	16.8%	Dem +76,357	Dem +15.5%	73%
1996	555,734	191,236	34.4%	275,221	49.5%	89,277	16.1%	Dem +83,985	Dem +15.1%	84%
1994	492,562	174,450	35.4%	249,556	50.7%	68,556	13.9%	Dem +75,106	Dem +15.2%	77%
1992	507,451	179,763	35.4%	257,830	50.8%	69,858	13.8%	Dem +78,067	Dem +15.4%	82%
1990	453,435	167,703	37.0%	233,702	51.5%	52,030	11.5%	Dem +65,999	Dem +14.6%	75%
1986	410,072	151,201	36.9%	213,369	52.0%	45,502	11.1%	Dem +62,168	Dem +15.2%	74%

Contra Costa County, CA

Historical Presidential Election Results for Contra Costa County, CA

Historical Statewide Election Results for Contra Costa County, CA

Historical U.S. House Election Results for Contra Costa County, CA

Voter Registration Data for Contra Costa County, CA