California 4th Congressional District
Congressional District 4
Covers all of Colusa County, Napa County, Yuba County and Sutter County; parts of Yolo County, Sonoma County, Lake County and Placer County.
Who Holds This Seat
Running in 2026
Democrat · U.S. Representative
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Sep 24
- Raised
- $4,257,436cycle to date through Jun 30
- Cash on Hand
- $1,075,737cycle to date through Jun 30
View on FEC.govFEC, cycle to date through Jun 30, 2026
Democrat
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Sep 24
- Raised
- $8,378,929cycle to date through Jun 30
- Cash on Hand
- $655,718cycle to date through Jun 30
View on FEC.govFEC, cycle to date through Jun 30, 2026
On File, Not Running
The District
583 precincts · District lines: Congressional lines: enacted plan "AB 604 Congressional Plan (2025)" (AB 604, Chapter 96, Statutes of 2025; made operative by Proposition 50 (Election Rigging Response Act), approved by voters Nov 4, 2025); 2026 status: In effect for the 2026 elections under Proposition 50 (approved Nov 4, 2025); Official file https://aelc.assembly.ca.gov/system/files/2025-08/ab604.zip
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President520 precinctsStatewide DatabaseCertified — county Statements of Vote… | Kamala D. Harris (D)212,919 · 56.6% | Donald J. Trump (R)151,978 · 40.4% | D+16.2 | 376,256 | Statewide DatabaseCertified — county Statements of Vote… |
| 2024 US Senate - 2520 precinctsStatewide DatabaseCertified — county Statements of Vote… | Adam B. Schiff (D)208,848 · 56.9% | Steve Garvey (R)158,272 · 43.1% | D+13.8 | 367,120 | Statewide DatabaseCertified — county Statements of Vote… |
| 2024 US Senate - 3 Partial/Unexpired Term519 precinctsStatewide DatabaseCertified — county Statements of Vote… | Adam B. Schiff (D)201,559 · 56.7% | Steve Garvey (R)154,191 · 43.3% | D+13.3 | 355,750 | Statewide DatabaseCertified — county Statements of Vote… |
| 2022 US Senate - 1608 precinctsStatewide DatabaseCertified — county Statements of Vote… | Alex Padilla (D)162,105 · 58.1% | Mark P. Meuser (R)116,875 · 41.9% | D+16.2 | 278,980 | Statewide DatabaseCertified — county Statements of Vote… |
| 2022 US Senate - 3 Partial/Unexpired Term608 precinctsStatewide DatabaseCertified — county Statements of Vote… | Alex Padilla (D)161,133 · 58.0% | Mark P. Meuser (R)116,487 · 42.0% | D+16.1 | 277,620 | Statewide DatabaseCertified — county Statements of Vote… |
| 2022 Governor608 precinctsStatewide DatabaseCertified — county Statements of Vote… | Gavin Newsom (D)156,827 · 55.6% | Brian Dahle (R)125,186 · 44.4% | D+11.2 | 282,013 | Statewide DatabaseCertified — county Statements of Vote… |
| 2020 President608 precinctsStatewide DatabaseCertified — county Statements of Vote… | Joseph R. Biden (D)241,734 · 59.8% | Donald J. Trump (R)153,202 · 37.9% | D+21.9 | 404,424 | Statewide DatabaseCertified — county Statements of Vote… |
Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
United States Representative District 4
California Statewide Direct Primary Election June 2, 2026 · Jun 2, 2026| Candidate | Party | Votes | Share |
|---|---|---|---|
| Mike ThompsonDemocrat | Democrat | 84,753 | 41.0% |
| Eric JonesDemocrat | Democrat | 45,992 | 22.2% |
| Ray RiehleRepublican | Republican | 42,883 | 20.7% |
| Sharon BrownRepublican | Republican | 9,818 | 4.7% |
| John MackenzieRepublican | Republican | 9,691 | 4.7% |
| Chuck UribeRepublican | Republican | 7,235 | 3.5% |
| Jimih JonesRepublican | Republican | 3,001 | 1.5% |
| Mandy GhusarRepublican | Republican | 1,987 | 1.0% |
| Thomas M RoachNo party preference | No party preference | 1,527 | 0.7% |
Certified county Statements of Vote · California Secretary of State — Statement of Vote, June 2, 2026 Statewide…
Sources (2)
- Certified county Statements of Vote (precinct level) reconciled exactly to the California Secretary of State certified Statement of Vote
- privacy-suppressed precincts carried as one county-level entry per candidate
United States Representative District 4
2024 General Election (precinct detail) · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Mike ThompsonDemocratic | Democratic | 227,730 | 66.5% |
| John MunnRepublican | Republican | 114,950 | 33.5% |
Certified — county Statements of Vote as compiled by the Statewide Database; contest totals compared with the California Secretary of State certified Statement of Vote · Statewide Database
United States Representative District 4
2022 General Election (precinct detail) · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| Mike ThompsonDemocratic | Democratic | 176,900 | 67.8% |
| Matt BrockRepublican | Republican | 84,007 | 32.2% |
Certified — county Statements of Vote as compiled by the Statewide Database; contest totals compared with the California Secretary of State certified Statement of Vote · Statewide Database
United States Representative District 4
2020 General Election (precinct detail) · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Tom McClintockRepublican | Republican | 247,291 | 55.9% |
| Brynne S. KennedyDemocratic | Democratic | 194,731 | 44.1% |
Certified — county Statements of Vote as compiled by the Statewide Database; contest totals compared with the California Secretary of State certified Statement of Vote · Statewide Database