California 10th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +29.1% |
| 2012 | +24.5% |
| 2016 | +35.7% |
| 2020 | +38.6% |
| 2024 | +33.6% |
Federal officeholders only. State and local officeholders are planned for the next data pass.
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
| Year | District | Won | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | 10 | D | 66.5%242,325 | 33.5%122,219 | 364,544 |
| 2022 | 10 | D | 78.9%198,415 | 0.0%0 | 251,380 |
| 2020 | 10 | D | 55.2%166,865 | 44.8%135,629 | 302,494 |
| 2018 | 10 | D | 52.3%115,945 | 47.7%105,955 | 221,900 |
| 2016 | 10 | R | 48.3%116,470 | 51.7%124,671 | 241,141 |
| 2014 | 10 | R | 43.9%55,123 | 56.1%70,582 | 125,705 |
| 2012 | 10 | R | 47.3%98,934 | 52.7%110,265 | 209,199 |
| 2010 | 10 | D | 58.8%137,578 | 37.9%88,512 | 233,806 |
| 2008 | 10 | D | 65.1%192,226 | 31.1%91,877 | 295,165 |
| 2006 | 10 | D | 66.4%130,859 | 33.5%66,069 | 196,978 |
| 2004 | 10 | D | 65.7%182,750 | 34.3%95,349 | 278,099 |
| 2002 | 10 | D | 75.6%126,390 | 0.0%0 | 167,197 |
| 2000 | 10 | D | 52.6%160,429 | 44.2%134,863 | 304,819 |
| 1998 | 10 | D | 53.5%127,134 | 43.4%103,299 | 237,809 |
| 1996 | 10 | D | 48.6%137,726 | 47.2%133,633 | 283,183 |
| 1994 | 10 | R | 38.6%90,523 | 59.3%138,916 | 234,241 |
| 1992 | 10 | R | 48.0%134,635 | 52.0%145,702 | 280,429 |
| 1990 | 10 | D | 62.7%81,875 | 37.3%48,747 | 130,637 |
| 1988 | 10 | D | 86.2%142,500 | 0.0%0 | 165,301 |
| 1986 | 10 | D | 70.5%84,240 | 26.6%31,826 | 119,564 |
| 1984 | 10 | D | 62.4%102,469 | 34.3%56,256 | 164,177 |
| 1982 | 10 | D | 62.7%77,263 | 33.7%41,506 | 123,281 |
| 1980 | 10 | D | 62.1%102,231 | 27.9%45,987 | 164,543 |
| 1978 | 10 | D | 67.1%84,488 | 32.9%41,374 | 125,862 |
| 1976 | 10 | D | 72.0%111,992 | 24.5%38,088 | 155,443 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 58.9%9,036,252 | 41.1%6,312,594 | 15,348,846 |
| 2022 | D | 61.1%6,621,621 | 38.9%4,222,029 | 10,843,650 |
| 2018 | D | 100.0%11,113,364 | 0.0%0 | 11,113,364 |
| 2016 | D | 100.0%12,244,170 | 0.0%0 | 12,244,170 |
| 2012 | D | 62.5%7,864,624 | 37.5%4,713,887 | 12,578,511 |
| 2010 | D | 52.2%5,218,441 | 42.2%4,217,366 | 10,000,093 |
| 2006 | D | 59.4%5,076,289 | 35.0%2,990,822 | 8,541,150 |
| 2004 | D | 57.7%6,955,728 | 37.8%4,555,922 | 12,053,242 |
| 2000 | D | 55.8%5,932,522 | 36.6%3,886,853 | 10,623,608 |
| 1998 | D | 53.1%4,410,056 | 43.0%3,575,078 | 8,311,905 |
| 1994 | D | 46.7%3,979,152 | 44.8%3,817,025 | 8,513,916 |
| 1992 | D | 47.9%5,173,467 | 43.0%4,644,182 | 10,799,436 |
| 1988 | R | 44.0%4,287,253 | 52.8%5,143,409 | 9,743,547 |
| 1986 | D | 49.3%3,646,672 | 47.9%3,541,804 | 7,398,462 |
| 1982 | R | 44.8%3,494,968 | 51.5%4,022,565 | 7,805,450 |
| 1980 | D | 56.5%4,704,098 | 37.1%3,091,671 | 8,324,012 |
| 1976 | R | 46.9%3,502,862 | 50.2%3,748,973 | 7,470,586 |
Anchored in the northern San Joaquin Valley and Sierra Nevada foothills, CA-10 leans reliably Republican in federal races, reflecting its rural agricultural economy and lower population density compared with the state's coastal districts.
Across the recorded series it reached a Democratic high of 38.6 points in 2020. Between 2020 and 2024 the district moved 5.0 points toward the Republican candidate; the 2024 margin was 33.6 points.
A population of 757,805, a 53% non-Hispanic-white share, and a median household income of $148,600 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 16 and Congressional District 19.
The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
California 10th Congressional District. Akashic. https://akashic.app/cd/0610/. Accessed May 20, 2026. License: CC BY 4.0.