| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| CA-01 | DEM | 185,216 | 64.1% | D+31.7 | |
| CA-02 | Wally HergerREP | REP | 178,985 | 65.8% | R+36.5 |
| CA-03 | Doug OseREP | REP | 194,918 | 62.5% | R+28.0 |
| CA-04 | REP | 228,506 | 64.8% | R+32.9 | |
| CA-05 | DEM | 131,578 | 70.5% | D+44.1 | |
| CA-06 | DEM | 209,563 | 66.7% | D+37.1 | |
| CA-07 | DEM | 138,376 | 70.7% | D+44.3 | |
| CA-08 | Nancy PelosiDEM | DEM | 160,441 | 79.6% | D+67.1 |
| CA-09 | Barbara LeeDEM | DEM | 166,917 | 81.4% | D+66.2 |
| CA-10 | DEM | 167,197 | 75.6% | D+75.6 | |
| CA-11 | REP | 173,956 | 60.3% | R+20.6 | |
| CA-12 | Tom LantosDEM | DEM | 154,984 | 68.1% | D+43.4 |
| CA-13 | DEM | 121,723 | 71.1% | D+49.0 | |
| CA-14 | Anna G EshooDEM | DEM | 171,678 | 68.2% | D+40.0 |
| CA-15 | DEM | 133,022 | 65.8% | D+34.8 | |
| CA-16 | Zoe LofgrenDEM | DEM | 107,986 | 67.0% | D+37.2 |
| CA-17 | Sam FarrDEM | DEM | 149,296 | 68.1% | D+41.1 |
| CA-18 | DEM | 109,593 | 51.3% | D+7.9 | |
| CA-19 | REP | 157,802 | 67.3% | R+37.3 | |
| CA-20 | DEM | 74,770 | 63.7% | D+29.4 | |
| CA-21 | REP | 124,198 | 70.5% | R+44.3 | |
| CA-22 | REP | 164,285 | 73.3% | R+49.6 | |
| CA-23 | Lois CappsDEM | DEM | 162,222 | 59.0% | D+20.4 |
| CA-24 | REP | 185,006 | 65.2% | R+33.4 | |
| CA-25 | REP | 124,336 | 65.0% | R+33.9 | |
| CA-26 | David DreierREP | REP | 149,530 | 63.8% | R+30.3 |
| CA-27 | Brad ShermanDEM | DEM | 128,811 | 62.0% | D+23.9 |
| CA-28 | DEM | 103,326 | 71.4% | D+48.2 | |
| CA-29 | DEM | 121,541 | 62.6% | D+29.1 | |
| CA-30 | DEM | 185,593 | 70.4% | D+40.7 | |
| CA-31 | DEM | 67,243 | 81.2% | D+62.3 | |
| CA-32 | DEM | 85,079 | 68.8% | D+41.3 | |
| CA-33 | DEM | 118,449 | 82.5% | D+68.5 | |
| CA-34 | DEM | 65,824 | 74.0% | D+48.1 | |
| CA-35 | DEM | 93,407 | 77.5% | D+58.1 | |
| CA-36 | Jane HarmanDEM | DEM | 143,751 | 61.4% | D+26.3 |
| CA-37 | DEM | 87,012 | 72.9% | D+49.8 | |
| CA-38 | DEM | 88,027 | 71.1% | D+44.8 | |
| CA-39 | DEM | 95,346 | 54.8% | D+14.0 | |
| CA-40 | REP | 136,642 | 67.6% | R+38.2 | |
| CA-41 | Jerry LewisREP | REP | 135,533 | 67.4% | R+37.8 |
| CA-42 | REP | 145,246 | 67.8% | R+38.8 | |
| CA-43 | Joe BacaDEM | DEM | 68,340 | 66.4% | D+35.9 |
| CA-44 | Ken CalvertREP | REP | 120,463 | 63.7% | R+32.1 |
| CA-45 | Mary BonoREP | REP | 133,533 | 65.2% | R+32.5 |
| CA-46 | REP | 176,265 | 61.7% | R+27.2 | |
| CA-47 | DEM | 70,178 | 60.6% | D+25.9 | |
| CA-48 | REP | 179,549 | 68.4% | R+40.0 | |
| CA-49 | REP | 122,497 | 77.2% | R+77.2 | |
| CA-50 | REP | 172,701 | 64.3% | R+32.0 | |
| CA-51 | Bob FilnerDEM | DEM | 102,787 | 57.9% | D+18.6 |
| CA-52 | REP | 169,010 | 70.2% | R+44.4 | |
| CA-53 | DEM | 116,180 | 62.2% | D+24.4 |