California 33rd Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +24.8% |
| 2012 | +27.5% |
| 2016 | +29.8% |
| 2020 | +25.8% |
| 2024 | +9.9% |
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 | 33 | D | 58.8%137,197 | 41.2%96,078 | 233,275 |
| 2022 | 33 | D | 57.7%76,588 | 42.3%56,119 | 132,707 |
| 2020 | 33 | D | 67.6%257,094 | 32.4%123,334 | 380,428 |
| 2018 | 33 | D | 70.0%219,091 | 30.0%93,769 | 312,860 |
| 2016 | 33 | D | 66.4%219,397 | 33.6%110,822 | 330,219 |
| 2014 | 33 | D | 59.2%108,331 | 40.8%74,700 | 183,031 |
| 2012 | 33 | D | 54.0%171,860 | 0.0%0 | 318,520 |
| 2010 | 33 | D | 86.1%131,990 | 13.9%21,342 | 153,333 |
| 2008 | 33 | D | 87.6%186,924 | 12.4%26,536 | 213,460 |
| 2006 | 33 | D | 100.0%113,715 | 0.0%0 | 113,715 |
| 2004 | 33 | D | 88.6%166,801 | 0.0%0 | 188,314 |
| 2002 | 33 | D | 82.5%97,779 | 14.1%16,699 | 118,449 |
| 2000 | 33 | D | 84.5%60,510 | 11.5%8,260 | 71,571 |
| 1998 | 33 | D | 87.2%43,310 | 12.8%6,364 | 49,674 |
| 1996 | 33 | D | 82.1%47,478 | 14.1%8,147 | 57,828 |
| 1994 | 33 | D | 81.5%33,814 | 0.0%0 | 41,508 |
| 1992 | 33 | D | 63.0%32,010 | 30.4%15,428 | 50,779 |
| 1990 | 33 | R | 31.4%49,981 | 63.7%101,336 | 159,157 |
| 1988 | 33 | R | 26.2%57,586 | 69.2%151,704 | 219,383 |
| 1986 | 33 | R | 26.8%44,312 | 71.7%118,541 | 165,353 |
| 1984 | 33 | R | 26.0%54,147 | 70.6%147,363 | 208,619 |
| 1982 | 33 | R | 32.2%55,514 | 65.2%112,362 | 172,350 |
| 1980 | 33 | R | 29.1%50,365 | 70.9%122,439 | 172,804 |
| 1978 | 33 | R | 44.0%62,540 | 56.0%79,533 | 142,073 |
| 1976 | 33 | R | 44.9%77,807 | 55.1%95,398 | 173,205 |
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 |
California's 33rd congressional district, as drawn for the 2026 elections, covers part of the Inland Empire across San Bernardino and Riverside counties. About 753,400 people live within its 2026 boundaries, with a median age of 33.9. Measured on those boundaries, the district's Democratic presidential margin narrowed over the last decade. It was D+27.5 in 2012, D+29.8 in 2016, and D+25.9 in 2020, then D+9.9 in 2024 — a move of about 16 points toward the Republican candidate between 2020 and 2024. Turnout in 2024 was 247,888.
Across the recorded series it reached a Democratic high of 29.8 points in 2016. Between 2020 and 2024 the district moved 16.0 points toward the Republican candidate; the 2024 margin was 9.9 points.
A population of 753,406, a 29% non-Hispanic-white share, and a median household income of $86,281 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 39 and Congressional District 13.
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 33rd Congressional District. Akashic. https://akashic.app/cd/0633/. Accessed May 20, 2026. License: CC BY 4.0.