California 12th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +80.1% |
| 2012 | +82.2% |
| 2016 | +81.2% |
| 2020 | +80.7% |
| 2024 | +73.8% |
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 | 12 | D | 100.0%283,025 | 0.0%0 | 283,025 |
| 2022 | 12 | D | 90.5%217,110 | 9.5%22,859 | 239,969 |
| 2020 | 12 | D | 100.0%362,950 | 0.0%0 | 362,950 |
| 2018 | 12 | D | 86.8%275,292 | 13.2%41,780 | 317,072 |
| 2016 | 12 | D | 80.9%274,035 | 0.0%0 | 338,845 |
| 2014 | 12 | D | 83.3%160,067 | 16.7%32,197 | 192,264 |
| 2012 | 12 | D | 85.1%253,709 | 14.9%44,478 | 298,187 |
| 2010 | 12 | D | 75.6%152,044 | 22.1%44,475 | 201,162 |
| 2008 | 12 | D | 75.1%200,442 | 18.5%49,258 | 266,853 |
| 2006 | 12 | D | 76.0%138,650 | 24.0%43,674 | 182,324 |
| 2004 | 12 | D | 68.0%171,852 | 20.8%52,593 | 252,599 |
| 2002 | 12 | D | 68.1%105,597 | 24.8%38,381 | 154,984 |
| 2000 | 12 | D | 74.5%158,404 | 20.8%44,162 | 212,556 |
| 1998 | 12 | D | 74.0%128,135 | 21.1%36,562 | 173,212 |
| 1996 | 12 | D | 71.7%149,049 | 23.7%49,276 | 207,908 |
| 1994 | 12 | D | 67.4%118,408 | 32.6%57,228 | 175,636 |
| 1992 | 12 | D | 68.8%157,205 | 23.3%53,278 | 228,407 |
| 1990 | 12 | R | 33.7%69,270 | 60.8%125,157 | 205,698 |
| 1988 | 12 | R | 46.0%121,523 | 51.7%136,384 | 263,930 |
| 1986 | 12 | R | 37.2%69,564 | 59.5%111,252 | 187,043 |
| 1984 | 12 | R | 36.0%91,026 | 61.7%155,795 | 252,693 |
| 1982 | 12 | R | 33.5%61,372 | 63.0%115,365 | 183,208 |
| 1980 | 12 | R | 18.6%37,009 | 72.2%143,817 | 199,083 |
| 1978 | 12 | R | 21.5%34,472 | 73.1%116,982 | 160,085 |
| 1976 | 12 | R | 31.3%61,526 | 66.2%130,332 | 196,857 |
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 San Francisco, CA-12 posts presidential margins rarely seen outside urban cores—Biden and Harris each carried it by more than 60 points—making it among the least competitive seats in Congress.
Across the recorded series it reached a Democratic high of 82.2 points in 2012. Between 2020 and 2024 the district moved 6.9 points toward the Republican candidate; the 2024 margin was 73.8 points.
A population of 758,375, a 36% non-Hispanic-white share, and a median household income of $108,648 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 10 and Congressional District 11.
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 12th Congressional District. Akashic. https://akashic.app/cd/0612/. Accessed May 20, 2026. License: CC BY 4.0.