United States Representative · District 4 · California · 2026

Who is running

Eric JonesDemocraticUnited States Representative · District 4
Raised
$18.1M
Cash on hand
$1.5M
See full profile →
Mike ThompsonDemocraticUnited States Representative · District 4
Raised
$5.5M
Cash on hand
$1.4M
In Congress since
1999
Votes attended
98.7%
See full profile →

Certified by California Secretary of State, as of Oct 15, 2026. Official list

Names and parties are copied exactly from the official list. Blue marks Democrats, red marks Republicans, and gray marks every other party or none; each is also labeled in words.

Official vote count

Unofficial results until certified. These are counts as published by California Secretary of State. Counts change as ballots are counted. Power & Politics does not call races or project winners.

U.S. House of Representatives District 4 - Districtwide Results, as listed by the official source
Candidate or choice	Party	Votes	Share of votes counted
Eric Jones	Dem	61,856	51.6%
Mike Thompson	Dem	58,031	48.4%

500 of 500 precincts reporting, as stated by California Secretary of State. As reported by California Secretary of State (the source says it was updated November 5, 2026, 9:23 a.m.). Rows are in the order the source lists them, which is not a ranking. Official source · All California results

Worth knowing

The party winning this district last changed in 2022, when Mike Thompson (Democratic) won it after a Republican win in 2020. Source: Federal Election Commission, Federal Elections and Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election and MIT Election Data and Science Lab, U.S. House of Representatives 1976-2024 (compiled from the Clerk of the House)
The closest result we hold for this district was in 1944: Frank R. Havenner won by 215 votes, 0.1 points of all votes counted. Source: Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election
11 different people won the 53 regular elections for this district from 1920 to 2024. Source: Federal Election Commission, Federal Elections and Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election and MIT Election Data and Science Lab, U.S. House of Representatives 1976-2024 (compiled from the Clerk of the House)
A candidate with the same name as the 2024 winner, Mike Thompson, is on the 2026 official list. Source: Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election
Two candidates are on the official list for this race. Source: Official list from California Secretary of State
All 52 U.S. House contests in California on the official list have more than one candidate. Source: Official list from California Secretary of State

Each fact is worked out from the official records linked beside it. None is a prediction or a rating.

Past results

Share of the vote for this district, 1920 to 2024Percent of all votes counted in each regular general election. A gap means the party had no candidate or no count was published.

Democratic candidate
Republican candidate

District lines are redrawn after each census and sometimes in between, so the same district number did not always cover the same ground. A break in a line means no figure was published or held for that year. It does not mean zero.

Data table: Share of the vote for this district, 1920 to 2024

Share of the vote for this district, 1920 to 2024
Year	Democratic candidate	Republican candidate
1920	No figure	84.55%
1922	No figure	82.97%
1924	No figure	80.96%
1926	31.12%	63.83%
1928	No figure	74.89%
1930	No figure	100%
1932	No figure	85.32%
1934	44.54%	47.99%
1936	No figure	39.98%
1938	61.21%	38.79%
1940	44.44%	54.6%
1942	No figure	98.19%
1944	50.07%	49.93%
1946	52.85%	47.15%
1948	51%	47.65%
1950	67.19%	32.81%
1952	45%	55%
1954	36.69%	61.24%
1956	38.07%	61.93%
1958	40.03%	59.97%
1960	34.69%	65.31%
1962	56.5%	43.48%
1964	71.92%	28.07%
1966	59.45%	40.54%
1968	55.54%	41.59%
1970	67.96%	32.04%
1972	67.44%	32.56%
1974	100%	No figure
1976	50.22%	49.78%
1978	55.37%	44.63%
1980	65.28%	29.72%
1982	63.86%	36.14%
1984	61.4%	36.7%
1986	70.16%	29.84%
1988	99.28%	No figure
1990	54.69%	39.31%
1992	45.7%	49.81%
1994	34.91%	61.33%
1996	36.1%	60.46%
1998	34.4%	62.57%
2000	31.46%	63.42%
2002	31.89%	64.77%
2004	34.61%	65.39%
2006	45.87%	49.05%
2008	49.76%	50.24%
2010	31.44%	61.27%
2012	38.89%	61.11%
2014	No figure	60.05%
2016	37.28%	62.72%
2018	45.87%	54.13%
2020	44.05%	55.95%
2022	67.8%	32.2%
2024	66.46%	33.54%

Source: Federal Election Commission, Federal Elections and Clerk of the House of Representatives, Statistics of the Presidential and Congressional Election and MIT Election Data and Science Lab, U.S. House of Representatives 1976-2024 (compiled from the Clerk of the House). As of Nov 5, 2026.

Winners and margins, 1920 to 2024

Winners and margins
Year	Most votes	Margin over the runner-up
2024	Mike Thompson (Democratic)	112,780 votes (32.9 points)
2022	Mike Thompson (Democratic)	92,893 votes (35.6 points)
2020	Tom McClintock (Republican)	52,560 votes (11.9 points)
2018	Tom McClintock (Republican)	28,148 votes (8.3 points)
2016	Tom McClintock (Republican)	89,288 votes (25.4 points)
2014	Tom McClintock (Republican)	42,434 votes (20.1 points)
2012	Tom McClintock (Republican)	71,918 votes (22.2 points)
2010	Tom McClintock (Republican)	90,744 votes (29.8 points)
2008	Tom McClintock (Republican)	1,800 votes (0.5 points)
2006	John T. Doolittle (Republican)	8,819 votes (3.2 points)
2004	John T. Doolittle (Republican)	104,483 votes (30.8 points)
2002	John T. Doolittle (Republican)	75,137 votes (32.9 points)
2000	John T. Doolittle (Republican)	99,529 votes (32.0 points)
1998	John T. Doolittle (Republican)	69,912 votes (28.2 points)
1996	John T. Doolittle (Republican)	66,100 votes (24.4 points)
1994	John T Doolittle (Republican)	62,431 votes (26.4 points)
1992	John T Doolittle (Republican)	11,666 votes (4.1 points)
1990	Vic Fazio (Democratic)	32,352 votes (15.4 points)
1988	Vic Fazio (Democratic)	Unopposed
1986	Vic Fazio (Democratic)	73,768 votes (40.3 points)
1984	Vic Fazio (Democratic)	52,336 votes (24.7 points)
1982	Vic Fazio (Democratic)	51,429 votes (27.7 points)
1980	Vic Fazio (Democratic)	72,918 votes (35.6 points)
1978	Vic Fazio (Democratic)	17,031 votes (10.7 points)
1976	Robert L Leggett (Democratic)	651 votes (0.4 points)
1974	Robert L. Leggett (Democratic)	Unopposed
1972	Robert L. Leggett (Democratic)	59,306 votes (34.9 points)
1970	Robert L. Leggett (Democratic)	54,702 votes (35.9 points)
1968	Robert L. Leggett (Democratic)	22,125 votes (14.0 points)
1966	Robert L. Leggett (Democratic)	21,605 votes (18.9 points)
1964	Robert L. Leggett (Democratic)	51,789 votes (43.8 points)
1962	Robert L. Leggett (Democratic)	12,801 votes (13.0 points)
1960	William S. Mailliard (Republican)	55,435 votes (30.6 points)
1958	William S. Mailliard (Republican)	32,776 votes (19.9 points)
1956	William S. Mailliard (Republican)	42,056 votes (23.9 points)
1954	William S. Mailliard (Republican)	35,459 votes (24.6 points)
1952	William S. Mailliard (Republican)	18,611 votes (10.0 points)
1950	Franck R. Havenner (Democratic)	42,509 votes (34.4 points)
1948	Franck R. Havenner (Democratic)	4,829 votes (3.3 points)
1946	Franck R. Havenner (Democratic)	6,542 votes (5.7 points)
1944	Frank R. Havenner (Democratic)	215 votes (0.1 points)
1942	Thomas Rolph (Republican, Democrat)	61,619 votes (96.4 points)
1940	Thomas Rolph (Republican)	14,028 votes (10.2 points)
1938	Franck R. Havenner (Democrat, Progressive)	23,610 votes (22.4 points)
1936	Frank R. Havenner (Progressive, Democrat)	20,258 votes (18.5 points)
1934	Florence P. Kahn (Republican)	3,620 votes (3.4 points)
1932	Florence P. Kahn (Republican, Democrat)	55,822 votes (70.6 points)
1930	Florence P. Kahn (Republican-Democrat)	Unopposed
1928	Florence P. Kahn (Republican)	33,368 votes (49.8 points)
1926	Florence P. Kahn (Republican)	19,143 votes (32.7 points)
1924	Julius Kahn (Republican)	33,688 votes (61.9 points)
1922	Julius Kahn (Republican)	36,980 votes (65.9 points)
1920	Julius Kahn (Republican)	41,552 votes (69.1 points)

See every result for this district

Map

California's U.S. House districts, with District 4 outlined

This race
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Outlines are the Census Bureau's simplified cartographic boundaries, drawn for display, not for legal boundaries. Group names are in the table and in each district's tooltip, not only shown by colour.

Data table: California's U.S. House districts, with District 4 outlined

California's U.S. House districts, with District 4 outlined
District	Contest
CA-1	Another district
CA-2	Another district
CA-3	Another district
CA-4	This race
CA-5	Another district
CA-6	Another district
CA-7	Another district
CA-8	Another district
CA-9	Another district
CA-10	Another district
CA-11	Another district
CA-12	Another district
CA-13	Another district
CA-14	Another district
CA-15	Another district
CA-16	Another district
CA-17	Another district
CA-18	Another district
CA-19	Another district
CA-20	Another district
CA-21	Another district
CA-22	Another district
CA-23	Another district
CA-24	Another district
CA-25	Another district
CA-26	Another district
CA-27	Another district
CA-28	Another district
CA-29	Another district
CA-30	Another district
CA-31	Another district
CA-32	Another district
CA-33	Another district
CA-34	Another district
CA-35	Another district
CA-36	Another district
CA-37	Another district
CA-38	Another district
CA-39	Another district
CA-40	Another district
CA-41	Another district
CA-42	Another district
CA-43	Another district
CA-44	Another district
CA-45	Another district
CA-46	Another district
CA-47	Another district
CA-48	Another district
CA-49	Another district
CA-50	Another district
CA-51	Another district
CA-52	Another district

Source: U.S. Census Bureau cartographic boundary file for the 119th Congress. As of the 119th Congress (2025 to 2027) boundary file.

The outlined district is the one in force for the 119th Congress. A state that redrew its map for 2026 may vote on different lines; the official list above names the contest.

Campaign money

Totals each campaign reported to the Federal Election Commission for 2025 to 2026
Candidate	Raised	Spent	Cash on hand	Through
Eric Jones	$18.1M	$16.5M	$1.5M	Oct 14, 2026
Mike Thompson	$5.5M	$5.3M	$1.4M	Oct 14, 2026

Each candidate's own reports to the Federal Election Commission, through the date shown. Candidates not listed have no FEC totals tied to them on our records. Each name links to the candidate's FEC page.

Headlines that name a candidate in this race

California Congressional District 4 voters to choose between incumbent Mike Thompson, challenger Eric Jones KION-TV · Nov 3, 2026
In District 4, Eric Jones seeks to unseat Mike Thompson with message of opportunity, change KION-TV · Oct 30, 2026
In District 4, newcomer Eric Jones seeks to unseat longtime Rep. Mike Thompson KION-TV · Oct 30, 2026
Rep. Mike Thompson faces fellow Democrat Eric Jones in contentious race for 4th District KION-TV · Oct 30, 2026
Rep. Mike Johnson faces fellow Democrat Eric Jones in battle for 4th District KION-TV · Oct 30, 2026

Headlines are shown as each outlet published them, with a link to the outlet. A headline appears here only when it names a candidate's full name and the state, or comes from a newsroom in the state. They are the outlets' reporting, not Power & Politics findings.

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