| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| CA-01 | DEM | 239,335 | 65.0% | D+37.0 | |
| CA-02 | Wally HergerREP | REP | 255,856 | 65.7% | R+37.6 |
| CA-03 | Doug OseREP | REP | 230,182 | 56.1% | R+15.7 |
| CA-04 | REP | 311,423 | 63.4% | R+32.0 | |
| CA-05 | DEM | 214,059 | 68.7% | D+42.5 | |
| CA-06 | DEM | 283,118 | 64.3% | D+36.0 | |
| CA-07 | DEM | 208,789 | 76.5% | D+55.3 | |
| CA-08 | Nancy PelosiDEM | DEM | 215,428 | 84.4% | D+72.7 |
| CA-09 | Barbara LeeDEM | DEM | 214,650 | 85.0% | D+75.2 |
| CA-10 | DEM | 304,819 | 52.6% | D+8.4 | |
| CA-11 | REP | 208,607 | 57.8% | R+19.7 | |
| CA-12 | Tom LantosDEM | DEM | 212,556 | 74.5% | D+53.8 |
| CA-13 | DEM | 183,146 | 70.4% | D+46.1 | |
| CA-14 | Anna G EshooDEM | DEM | 230,262 | 70.2% | D+44.5 |
| CA-15 | DEM | 236,822 | 54.3% | D+12.1 | |
| CA-16 | Zoe LofgrenDEM | DEM | 159,746 | 72.1% | D+48.8 |
| CA-17 | Sam FarrDEM | DEM | 208,760 | 68.6% | D+43.9 |
| CA-18 | DEM | 180,328 | 67.1% | D+35.8 | |
| CA-19 | REP | 222,615 | 64.9% | R+33.2 | |
| CA-20 | DEM | 126,534 | 52.4% | D+6.8 | |
| CA-21 | REP | 199,100 | 71.6% | R+46.8 | |
| CA-22 | Lois CappsDEM | DEM | 255,070 | 53.1% | D+8.8 |
| CA-23 | REP | 221,034 | 54.0% | R+13.4 | |
| CA-24 | Brad ShermanDEM | DEM | 235,444 | 66.0% | D+36.2 |
| CA-25 | REP | 222,778 | 62.2% | R+29.1 | |
| CA-26 | DEM | 114,781 | 84.1% | D+84.1 | |
| CA-27 | DEM | 215,774 | 52.7% | D+8.9 | |
| CA-28 | David DreierREP | REP | 205,199 | 56.8% | R+16.9 |
| CA-29 | DEM | 238,201 | 75.7% | D+56.5 | |
| CA-30 | DEM | 99,920 | 83.3% | D+71.5 | |
| CA-31 | DEM | 112,914 | 79.3% | D+79.3 | |
| CA-32 | DEM | 164,527 | 83.5% | D+71.4 | |
| CA-33 | DEM | 71,571 | 84.5% | D+73.0 | |
| CA-34 | DEM | 148,687 | 71.3% | D+48.8 | |
| CA-35 | DEM | 116,215 | 86.5% | D+75.7 | |
| CA-36 | Jane HarmanDEM | DEM | 238,736 | 48.4% | D+1.9 |
| CA-37 | DEM | 113,275 | 82.3% | D+71.1 | |
| CA-38 | Stephen HornREP | REP | 180,122 | 48.5% | R+1.0 |
| CA-39 | REP | 205,564 | 62.9% | R+31.6 | |
| CA-40 | Jerry LewisREP | REP | 189,022 | 79.9% | R+79.9 |
| CA-41 | REP | 177,616 | 58.9% | R+21.6 | |
| CA-42 | Joe BacaDEM | DEM | 151,577 | 59.8% | D+24.6 |
| CA-43 | Ken CalvertREP | REP | 190,332 | 73.7% | R+73.7 |
| CA-44 | Mary BonoREP | REP | 209,187 | 59.1% | R+21.2 |
| CA-45 | REP | 219,385 | 62.1% | R+29.7 | |
| CA-46 | DEM | 116,908 | 60.2% | D+25.2 | |
| CA-47 | REP | 276,401 | 65.6% | R+35.5 | |
| CA-48 | REP | 261,478 | 61.4% | R+33.1 | |
| CA-49 | DEM | 228,489 | 49.6% | D+3.5 | |
| CA-50 | Bob FilnerDEM | DEM | 139,472 | 68.3% | D+40.6 |
| CA-51 | REP | 267,799 | 64.3% | R+33.9 | |
| CA-52 | REP | 202,994 | 64.7% | R+33.4 |