California 27th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +10.6% |
| 2012 | +10.2% |
| 2016 | +18.5% |
| 2020 | +19.4% |
| 2024 | +9.8% |
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 | 27 | D | 51.3%154,040 | 48.7%146,050 | 300,090 |
| 2022 | 27 | R | 46.8%91,892 | 53.2%104,624 | 196,516 |
| 2020 | 27 | D | 69.8%221,411 | 30.2%95,907 | 317,318 |
| 2018 | 27 | D | 100.0%202,636 | 0.0%0 | 202,636 |
| 2016 | 27 | D | 67.4%168,977 | 32.6%81,655 | 250,632 |
| 2014 | 27 | D | 59.4%75,728 | 40.6%51,852 | 127,580 |
| 2012 | 27 | D | 64.0%154,191 | 36.0%86,817 | 241,008 |
| 2010 | 27 | D | 65.2%102,927 | 34.8%55,056 | 157,983 |
| 2008 | 27 | D | 68.5%145,812 | 24.8%52,852 | 212,835 |
| 2006 | 27 | D | 68.8%92,650 | 31.2%42,074 | 134,724 |
| 2004 | 27 | D | 62.3%125,296 | 33.3%66,946 | 201,198 |
| 2002 | 27 | D | 62.0%79,815 | 38.0%48,996 | 128,811 |
| 2000 | 27 | D | 52.7%113,708 | 43.8%94,518 | 215,774 |
| 1998 | 27 | R | 46.4%73,875 | 50.7%80,702 | 159,066 |
| 1996 | 27 | R | 43.2%82,014 | 50.2%95,310 | 189,930 |
| 1994 | 27 | R | 42.1%70,267 | 53.0%88,341 | 166,774 |
| 1992 | 27 | R | 39.4%83,805 | 49.7%105,521 | 212,450 |
| 1990 | 27 | D | 58.2%90,857 | 37.2%58,140 | 156,098 |
| 1988 | 27 | D | 67.5%148,814 | 29.6%65,307 | 220,335 |
| 1986 | 27 | D | 63.7%110,403 | 34.3%59,410 | 173,320 |
| 1984 | 27 | D | 55.0%116,933 | 41.8%88,896 | 212,781 |
| 1982 | 27 | D | 59.5%108,347 | 37.0%67,479 | 182,217 |
| 1980 | 27 | R | 46.5%100,061 | 51.0%109,807 | 215,316 |
| 1978 | 27 | R | 49.0%85,880 | 51.0%89,392 | 175,272 |
| 1976 | 27 | R | 45.3%94,988 | 54.7%114,623 | 209,611 |
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 San Gabriel Valley east of Los Angeles, CA-27 returned a D+29 presidential margin in 2024, reflecting a heavily Asian American and Latino electorate that has shifted decisively toward Democratic candidates over the past decade.
Across the recorded series it reached a Democratic high of 19.4 points in 2020. Between 2020 and 2024 the district moved 9.7 points toward the Republican candidate; the 2024 margin was 9.8 points.
A population of 759,650, a 39% non-Hispanic-white share, and a median household income of $101,314 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 42 and Congressional District 31.
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 27th Congressional District. Akashic. https://akashic.app/cd/0627/. Accessed May 20, 2026. License: CC BY 4.0.