| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| CA-01 | DEM | 282,971 | 66.9% | D+38.7 | |
| CA-02 | Wally HergerREP | REP | 272,429 | 66.8% | R+33.7 |
| CA-03 | REP | 287,073 | 61.9% | R+27.1 | |
| CA-04 | REP | 339,369 | 65.4% | R+30.8 | |
| CA-05 | DEM | 193,387 | 71.4% | D+48.0 | |
| CA-06 | DEM | 311,667 | 72.7% | D+45.3 | |
| CA-07 | DEM | 219,277 | 76.1% | D+52.2 | |
| CA-08 | Nancy PelosiDEM | DEM | 270,064 | 83.0% | D+71.4 |
| CA-09 | Barbara LeeDEM | DEM | 255,039 | 84.5% | D+72.3 |
| CA-10 | DEM | 278,099 | 65.7% | D+31.4 | |
| CA-11 | REP | 267,169 | 61.2% | R+22.5 | |
| CA-12 | Tom LantosDEM | DEM | 252,599 | 68.0% | D+47.2 |
| CA-13 | DEM | 201,921 | 71.6% | D+47.6 | |
| CA-14 | Anna G EshooDEM | DEM | 261,888 | 69.8% | D+43.2 |
| CA-15 | DEM | 214,338 | 72.0% | D+44.1 | |
| CA-16 | Zoe LofgrenDEM | DEM | 182,281 | 70.9% | D+44.6 |
| CA-17 | Sam FarrDEM | DEM | 223,225 | 66.7% | D+37.6 |
| CA-18 | DEM | 153,705 | 67.5% | D+35.0 | |
| CA-19 | REP | 235,264 | 66.0% | R+38.8 | |
| CA-20 | Jim CostaDEM | DEM | 114,236 | 53.4% | D+6.8 |
| CA-21 | REP | 192,315 | 73.2% | R+46.3 | |
| CA-22 | REP | 209,384 | 100.0% | R+100.0 | |
| CA-23 | Lois CappsDEM | DEM | 244,297 | 63.0% | D+28.7 |
| CA-24 | REP | 284,378 | 62.8% | R+28.9 | |
| CA-25 | REP | 225,970 | 64.4% | R+28.8 | |
| CA-26 | David DreierREP | REP | 251,207 | 53.6% | R+10.8 |
| CA-27 | Brad ShermanDEM | DEM | 201,198 | 62.3% | D+29.0 |
| CA-28 | DEM | 162,510 | 71.0% | D+47.6 | |
| CA-29 | DEM | 206,832 | 64.6% | D+34.2 | |
| CA-30 | DEM | 304,147 | 71.2% | D+42.5 | |
| CA-31 | DEM | 111,411 | 80.2% | D+60.4 | |
| CA-32 | DEM | 140,146 | 85.0% | D+85.0 | |
| CA-33 | DEM | 188,314 | 88.6% | D+88.6 | |
| CA-34 | DEM | 110,457 | 74.5% | D+49.0 | |
| CA-35 | DEM | 156,407 | 80.5% | D+65.4 | |
| CA-36 | Jane HarmanDEM | DEM | 244,044 | 62.0% | D+28.5 |
| CA-37 | DEM | 158,318 | 75.0% | D+54.9 | |
| CA-38 | DEM | 116,851 | 100.0% | D+100.0 | |
| CA-39 | DEM | 164,964 | 60.7% | D+21.4 | |
| CA-40 | REP | 217,301 | 67.9% | R+35.9 | |
| CA-41 | Jerry LewisREP | REP | 218,937 | 83.0% | R+83.0 |
| CA-42 | REP | 246,025 | 68.1% | R+36.3 | |
| CA-43 | Joe BacaDEM | DEM | 130,834 | 66.4% | D+32.7 |
| CA-44 | Ken CalvertREP | REP | 225,123 | 61.6% | R+26.6 |
| CA-45 | Mary BonoREP | REP | 230,490 | 66.6% | R+33.2 |
| CA-46 | REP | 276,690 | 61.9% | R+29.3 | |
| CA-47 | DEM | 108,783 | 60.4% | D+20.8 | |
| CA-48 | REP | 290,872 | 65.0% | R+32.8 | |
| CA-49 | REP | 226,466 | 62.5% | R+27.6 | |
| CA-50 | REP | 289,328 | 58.4% | R+21.9 | |
| CA-51 | Bob FilnerDEM | DEM | 180,879 | 61.6% | D+26.5 |
| CA-52 | REP | 271,438 | 69.2% | R+41.6 | |
| CA-53 | DEM | 221,436 | 66.1% | D+37.3 |