Voter registration as of September 07, 2018
Voter registration trends by district
 District
 | Registered Voters | Democratic %
| Republican %
| No Party Preference %* | Other %**
| Partisan Split***
|
|---|---|---|---|---|---|---|
| AD01 (Northeast Cal) | 273,392 | 28.47% | 41.18% | 19.91% | 10.44% | R + 12.71 |
| AD02 (North Coast) | 259,757 | 47.05% | 22.04% | 24.40% | 6.51% | D + 25.01 |
| AD03 (Butte-Tehama-Yuba) | 230,856 | 31.15% | 37.71% | 24.64% | 6.51% | R + 6.56 |
| AD04 (Napa/Yolo/Dixon) | 249,702 | 45.48% | 22.67% | 26.52% | 5.33% | D + 22.81 |
| AD05 (Foothills) | 242,803 | 30.16% | 40.03% | 23.31% | 6.49% | R + 9.87 |
| AD06 (Roseville) | 301,737 | 28.33% | 42.41% | 23.77% | 5.49% | R + 14.08 |
| AD07 (Sacramento) | 233,038 | 47.38% | 19.53% | 27.67% | 5.42% | D + 27.85 |
| AD08 (East Sacramento Co.) | 251,868 | 38.76% | 31.11% | 24.56% | 5.56% | D + 7.65 |
| AD09 (South Sacramento) | 241,025 | 44.71% | 25.32% | 25.41% | 4.56% | D + 19.39 |
| AD10 (Marin-Petaluma) | 275,675 | 54.54% | 16.02% | 24.92% | 4.52% | D + 38.52 |
| AD11 (Fairfield-Delta) | 250,952 | 45.02% | 23.72% | 26.40% | 4.86% | D + 21.30 |
| AD12 (Modesto) | 237,358 | 33.84% | 38.31% | 22.63% | 5.21% | R + 4.47 |
| AD13 (Stockton) | 215,211 | 47.40% | 24.10% | 24.55% | 3.95% | D + 23.30 |
| AD14 (Concord) | 260,700 | 50.36% | 18.36% | 26.68% | 4.60% | D + 32.00 |
| AD15 (Berkeley) | 286,876 | 65.37% | 5.95% | 24.73% | 3.95% | D + 59.42 |
| AD16 (Tri-Valley) | 300,374 | 40.61% | 27.04% | 28.17% | 4.17% | D + 13.57 |
| AD17 (East SF) | 278,930 | 59.57% | 5.21% | 31.60% | 3.62% | D + 54.36 |
| AD18 (Oakland) | 265,520 | 62.38% | 6.36% | 27.01% | 4.26% | D + 56.02 |
| AD19 (West SF) | 259,990 | 53.50% | 9.37% | 33.75% | 3.38% | D + 44.13 |
| AD20 (Hayward) | 229,007 | 52.81% | 13.13% | 30.08% | 3.98% | D + 39.68 |
| AD21 (Merced) | 181,421 | 43.71% | 29.02% | 22.60% | 4.68% | D + 14.69 |
| AD22 (San Mateo) | 260,958 | 49.98% | 16.51% | 29.84% | 3.66% | D + 33.47 |
| AD23 (Fresno) | 272,675 | 33.20% | 39.50% | 21.84% | 5.45% | R + 6.30 |
| AD24 (Palo Alto-Mountain View) | 236,127 | 48.67% | 16.01% | 32.13% | 3.18% | D + 32.66 |
| AD25 (Fremont-Sta Clara) | 208,260 | 45.03% | 15.00% | 36.50% | 3.47% | D + 30.03 |
| AD26 (Tulare) | 178,404 | 30.89% | 40.26% | 24.00% | 4.85% | R + 9.37 |
| AD27 (San Jose) | 193,508 | 48.68% | 14.26% | 33.51% | 3.56% | D + 34.42 |
| AD28 (Campbell-Saratoga) | 251,049 | 44.05% | 20.41% | 31.91% | 3.62% | D + 23.64 |
| AD29 (Monterey) | 274,467 | 49.60% | 19.31% | 26.22% | 4.88% | D + 30.29 |
| AD30 (East Monterey) | 198,525 | 50.08% | 20.57% | 25.57% | 3.78% | D + 29.51 |
| AD31 (W. Fresno) | 178,885 | 45.45% | 25.22% | 24.85% | 4.48% | D + 20.23 |
| AD32 (Kings) | 145,764 | 46.26% | 25.26% | 24.74% | 3.73% | D + 21.00 |
| AD33 (SB High Desert) | 208,989 | 32.86% | 35.29% | 24.83% | 7.02% | R + 2.43 |
| AD34 (Bakersfield) | 245,325 | 27.02% | 42.68% | 25.04% | 5.26% | R + 15.66 |
| AD35 (San Luis Obispo) | 243,424 | 34.92% | 35.15% | 24.44% | 5.50% | D + 0.23 |
| AD36 (Palmdale) | 223,949 | 39.38% | 30.88% | 24.22% | 5.52% | D + 8.50 |
| AD37 (Santa Barbara) | 260,250 | 44.89% | 24.31% | 25.73% | 5.08% | D + 20.58 |
| AD38 (Santa Clarita) | 279,467 | 34.60% | 34.72% | 25.60% | 5.07% | D + 0.12 |
| AD39 (E. San Fernando Valley) | 228,274 | 51.38% | 14.25% | 29.64% | 4.74% | D + 37.13 |
| AD40 (Redlands) | 229,676 | 41.24% | 30.83% | 23.16% | 4.78% | D + 10.41 |
| AD41 (Pasadena) | 279,165 | 43.75% | 27.05% | 24.55% | 4.66% | D + 16.70 |
| AD42 (Yucaipa) | 229,310 | 34.56% | 36.60% | 23.15% | 5.68% | R + 2.04 |
| AD43 (Burbank/Glendale) | 276,307 | 46.19% | 19.43% | 29.88% | 4.50% | D + 26.76 |
| AD44 (Ventura Co) | 237,185 | 41.02% | 29.75% | 24.52% | 4.71% | D + 11.27 |
| AD45 (W. San Fernando Valley) | 268,172 | 47.70% | 21.24% | 26.48% | 4.59% | D + 26.46 |
| AD46 (Sherman Oaks) | 243,090 | 52.29% | 13.97% | 29.06% | 4.69% | D + 38.32 |
| AD47 (Rialto) | 190,883 | 48.11% | 18.74% | 28.53% | 4.62% | D + 29.37 |
| AD49 (Monterey Park) | 215,574 | 46.12% | 21.60% | 27.62% | 4.66% | D + 24.52 |
| AD49 (Monterey Park) | 206,255 | 41.27% | 18.83% | 36.13% | 3.76% | D + 22.44 |
| AD50 (West LA) | 323,095 | 51.86% | 15.48% | 27.95% | 4.72% | D + 36.38 |
| AD51 (East LA) | 223,984 | 58.97% | 8.56% | 28.25% | 4.22% | D + 50.41 |
| AD52 (Ontario) | 189,316 | 46.42% | 20.81% | 27.83% | 4.94% | D + 25.61 |
| AD53 (Downtown LA) | 183,512 | 56.47% | 8.09% | 31.22% | 4.22% | D + 48.38 |
| AD54 (Culver City) | 293,463 | 61.23% | 8.71% | 25.93% | 4.13% | D + 52.52 |
| AD55 (Yorba Linda) | 239,650 | 32.11% | 35.20% | 28.78% | 3.92% | R + 3.09 |
| AD56 (Imperial County) | 174,092 | 46.58% | 23.74% | 25.48% | 4.20% | D + 22.84 |
| AD57 (Whittier) | 233,971 | 47.36% | 22.12% | 26.16% | 4.36% | D + 25.24 |
| AD58 (Downey) | 230,251 | 51.63% | 16.88% | 27.34% | 4.14% | D + 34.75 |
| AD59 (South LA) | 196,922 | 64.11% | 4.81% | 27.15% | 3.93% | D + 59.30 |
| AD60 (Corona) | 202,843 | 40.13% | 31.84% | 23.86% | 4.17% | D + 8.29 |
| AD61 (Riverside) | 198,855 | 46.17% | 24.99% | 24.40% | 4.44% | D + 21.18 |
| AD62 (Inglewood) | 261,467 | 58.04% | 11.07% | 26.57% | 4.33% | D + 46.97 |
| AD63 (South Gate) | 205,130 | 54.97% | 13.51% | 27.14% | 4.39% | D + 41.46 |
| AD64 (Carson) | 233,825 | 61.30% | 8.11% | 26.60% | 3.99% | D + 53.19 |
| AD65 (Fullerton) | 205,488 | 40.72% | 29.64% | 26.03% | 3.60% | D + 11.08 |
| AD66 (Torrance) | 282,634 | 40.10% | 28.95% | 26.58% | 4.37% | D + 11.15 |
| AD67 (Murrieta) | 234,215 | 28.70% | 40.31% | 25.33% | 5.66% | R + 11.61 |
| AD68 (Tustin) | 251,588 | 30.59% | 37.41% | 27.73% | 4.27% | R + 6.82 |
| AD69 (Santa Ana) | 148,800 | 50.81% | 18.44% | 27.15% | 3.60% | D + 32.37 |
| AD70 (Long Beach) | 266,152 | 48.72% | 19.25% | 26.63% | 5.40% | D + 29.47 |
| AD71 (East SD Co.) | 248,145 | 27.94% | 40.58% | 25.57% | 5.90% | R + 12.64 |
| AD72 (Seal Beach) | 232,417 | 32.39% | 36.21% | 27.26% | 4.14% | R + 3.82 |
| AD73 (Dana Point) | 274,518 | 27.19% | 42.89% | 25.34% | 4.58% | R + 15.70 |
| AD74 (Irvine) | 267,672 | 30.71% | 36.91% | 27.83% | 4.54% | R + 6.20 |
| AD75 (Escondido) | 235,890 | 28.06% | 39.16% | 27.05% | 5.73% | R + 11.10 |
| AD76 (Carlsbad) | 240,411 | 32.97% | 32.48% | 28.95% | 5.60% | R + -0.49 |
| AD77 (North SD) | 271,344 | 31.90% | 31.90% | 31.50% | 4.70% | D + 0.00 |
| AD78 (Coastal SD) | 276,170 | 41.81% | 21.77% | 31.03% | 5.40% | D + 20.04 |
| AD79 (East SD) | 256,581 | 41.52% | 22.19% | 31.32% | 4.97% | D + 19.33 |
| AD80 (South SD) | 214,079 | 46.20% | 15.22% | 34.38% | 4.20% | D + 30.98 |
| BOE1 (Inland) | 4,556,230 | 37.65% | 32.35% | 24.46% | 5.54% | D + 5.30 |
| BOE2 (Northwest) | 4,985,418 | 49.73% | 17.55% | 28.41% | 4.32% | D + 32.18 |
| BOE3 (LA/Ventura) | 4,921,135 | 50.20% | 17.73% | 27.61% | 4.46% | D + 32.47 |
| BOE4 (SoCal) | 4,623,806 | 36.43% | 31.46% | 27.34% | 4.76% | D + 4.97 |
| Statewide (Statewide) | 19,086,589 | 43.75% | 24.50% | 27.00% | 4.75% | D + 19.25 |
| CD01 (Northeast Cal) | 395,553 | 29.30% | 40.64% | 21.31% | 8.76% | R + 11.34 |
| CD02 (North Coast) | 414,928 | 50.57% | 19.17% | 24.61% | 5.65% | D + 31.40 |
| CD03 (Yolano-Yuba-Lake) | 354,538 | 39.27% | 28.48% | 26.73% | 5.53% | D + 10.79 |
| CD04 (Foothills) | 442,764 | 28.63% | 41.91% | 22.83% | 6.63% | R + 13.28 |
| CD05 (Napa-Santa Rosa) | 384,747 | 50.81% | 18.27% | 26.01% | 4.90% | D + 32.54 |
| CD06 (Sacramento) | 344,044 | 48.91% | 18.75% | 27.12% | 5.23% | D + 30.16 |
| CD07 (E. Sac Co) | 399,287 | 38.14% | 31.71% | 24.96% | 5.19% | D + 6.43 |
| CD08 (SB High Desert) | 321,422 | 32.31% | 36.56% | 24.31% | 6.82% | R + 4.25 |
| CD09 (San Joaquin) | 354,085 | 44.15% | 27.65% | 23.89% | 4.32% | D + 16.50 |
| CD10 (Stanislaus) | 338,972 | 37.61% | 34.40% | 22.91% | 5.07% | D + 3.21 |
| CD11 (Contra Costa) | 403,739 | 50.13% | 19.81% | 25.95% | 4.11% | D + 30.32 |
| CD12 (San Francisco) | 425,290 | 57.50% | 6.61% | 32.27% | 3.62% | D + 50.89 |
| CD13 (Oakland) | 430,694 | 64.32% | 5.65% | 25.76% | 4.26% | D + 58.67 |
| CD14 (San Mateo) | 373,248 | 51.22% | 14.01% | 31.26% | 3.51% | D + 37.21 |
| CD15 (Hawyard-Pleas-Liv) | 378,867 | 47.29% | 18.41% | 30.12% | 4.18% | D + 28.88 |
| CD16 (Merced) | 270,057 | 44.57% | 25.56% | 25.24% | 4.63% | D + 19.01 |
| CD17 (Milpitas) | 315,716 | 44.30% | 15.17% | 37.27% | 3.26% | D + 29.13 |
| CD18 (Silicon Valley) | 394,248 | 46.78% | 19.31% | 30.18% | 3.73% | D + 27.47 |
| CD19 (San Jose) | 330,346 | 47.22% | 17.88% | 31.06% | 3.84% | D + 29.34 |
| CD20 (Monterey) | 337,274 | 51.97% | 18.54% | 25.24% | 4.25% | D + 33.43 |
| CD21 (Kings) | 225,400 | 43.83% | 27.52% | 24.64% | 4.01% | D + 16.31 |
| CD22 (Visalia) | 352,864 | 31.77% | 40.94% | 22.22% | 5.06% | R + 9.17 |
| CD23 (Kern) | 345,987 | 28.69% | 41.23% | 24.71% | 5.37% | R + 12.54 |
| CD24 (Santa Barbara) | 377,453 | 38.94% | 30.64% | 25.16% | 5.25% | D + 8.30 |
| CD25 (S. Clarita/Palmdale) | 381,481 | 36.91% | 32.99% | 24.88% | 5.21% | D + 3.92 |
| CD26 (Ventura Co) | 368,171 | 41.75% | 28.60% | 24.70% | 4.95% | D + 13.15 |
| CD27 (Pasadena) | 376,658 | 42.98% | 22.60% | 30.31% | 4.11% | D + 20.38 |
| CD28 (Hollywood) | 426,131 | 48.84% | 17.18% | 29.37% | 4.61% | D + 31.66 |
| CD29 (E. San Fernando Valley) | 318,396 | 52.87% | 12.26% | 30.30% | 4.58% | D + 40.61 |
| CD30 (W. San Fernando Valley) | 430,254 | 48.58% | 20.13% | 26.61% | 4.68% | D + 28.45 |
| CD31 (San Bernardino) | 335,055 | 42.31% | 28.19% | 24.69% | 4.81% | D + 14.12 |
| CD32 (W. Covina) | 322,416 | 46.43% | 21.02% | 27.93% | 4.62% | D + 25.41 |
| CD33 (LA Coast) | 470,244 | 44.28% | 23.48% | 27.52% | 4.72% | D + 20.80 |
| CD34 (Downtown LA) | 307,969 | 56.60% | 8.79% | 30.33% | 4.28% | D + 47.81 |
| CD35 (Ontario) | 279,458 | 47.41% | 19.36% | 28.41% | 4.81% | D + 28.05 |
| CD36 (Coachella Valley) | 311,407 | 39.21% | 32.69% | 23.08% | 5.02% | D + 6.52 |
| CD37 (Culver City) | 420,477 | 61.86% | 8.06% | 25.97% | 4.11% | D + 53.80 |
| CD38 (Whittier) | 362,900 | 48.34% | 20.96% | 26.35% | 4.35% | D + 27.38 |
| CD39 (Fullerton) | 358,572 | 33.99% | 34.15% | 28.01% | 3.84% | D + 0.16 |
| CD40 (Downey) | 277,307 | 58.47% | 10.02% | 27.46% | 4.04% | D + 48.45 |
| CD41 (Riverside) | 293,105 | 46.25% | 25.40% | 23.99% | 4.37% | D + 20.85 |
| CD42 (Corona) | 347,753 | 30.05% | 39.80% | 24.98% | 5.18% | R + 9.75 |
| CD43 (Inglewood) | 370,650 | 56.71% | 13.24% | 26.05% | 3.99% | D + 43.47 |
| CD44 (Carson) | 339,092 | 59.13% | 9.93% | 26.74% | 4.19% | D + 49.20 |
| CD45 (Irvine) | 402,864 | 30.31% | 37.45% | 28.12% | 4.12% | R + 7.14 |
| CD46 (Santa Ana) | 246,300 | 47.36% | 22.33% | 26.58% | 3.74% | D + 25.03 |
| CD47 (Long Beach) | 368,478 | 43.71% | 24.25% | 27.12% | 4.92% | D + 19.46 |
| CD48 (Huntington Beach) | 392,104 | 29.67% | 39.41% | 26.31% | 4.60% | R + 9.74 |
| CD49 (Carlsbad) | 381,285 | 30.98% | 35.77% | 27.97% | 5.28% | R + 4.79 |
| CD50 (East SD Co.) | 367,137 | 26.86% | 40.99% | 26.33% | 5.82% | R + 14.13 |
| CD51 (S. SD - Imperial) | 306,704 | 46.67% | 15.66% | 33.33% | 4.33% | D + 31.01 |
| CD52 (San Diego) | 405,812 | 34.18% | 29.20% | 31.62% | 4.99% | D + 4.98 |
| CD53 (La Mesa) | 406,886 | 42.08% | 22.67% | 30.11% | 5.14% | D + 19.41 |
| SD02 (North Coast) | 524,289 | 50.06% | 19.43% | 24.90% | 5.62% | D + 30.63 |
| SD04 (Roseville-Yuba-Tehama) | 486,465 | 32.45% | 36.64% | 24.74% | 6.16% | R + 4.19 |
| SD06 (Sacramento) | 484,905 | 47.97% | 20.53% | 26.57% | 4.93% | D + 27.44 |
| SD08 (Foothills) | 522,379 | 32.37% | 39.53% | 22.41% | 5.69% | R + 7.16 |
| SD10 (Hywd-Frmnt-Snta Clra) | 438,847 | 49.35% | 13.89% | 33.01% | 3.75% | D + 35.46 |
| SD12 (Salinas-Merced) | 345,488 | 45.12% | 26.66% | 24.07% | 4.15% | D + 18.46 |
| SD14 (Fresno/Bakersfield) | 301,749 | 44.89% | 26.19% | 24.96% | 3.96% | D + 18.70 |
| SD16 (Kern) | 439,371 | 28.12% | 41.55% | 24.72% | 5.61% | R + 13.43 |
| SD18 (San Fernando Valley) | 469,035 | 51.96% | 14.06% | 29.30% | 4.67% | D + 37.90 |
| SD20 (Ontario) | 380,199 | 47.27% | 19.77% | 28.18% | 4.78% | D + 27.50 |
| SD22 (San Gabriel Valley) | 408,681 | 46.04% | 17.67% | 32.13% | 4.16% | D + 28.37 |
| SD24 (East LA) | 416,063 | 57.71% | 8.41% | 29.68% | 4.20% | D + 49.30 |
| SD26 (Coast LA) | 622,398 | 47.07% | 20.27% | 27.95% | 4.71% | D + 26.80 |
| SD28 (Coachella Valley) | 433,279 | 34.11% | 36.66% | 24.03% | 5.20% | R + 2.55 |
| SD30 (Culver City) | 509,828 | 63.30% | 6.62% | 26.01% | 4.07% | D + 56.68 |
| SD32 (Whittier) | 477,539 | 47.94% | 21.28% | 26.49% | 4.30% | D + 26.66 |
| SD34 (Westminster/Santa Ana) | 401,321 | 39.33% | 29.84% | 26.76% | 4.07% | D + 9.49 |
| SD36 (Carlsbad) | 520,267 | 29.85% | 38.07% | 27.01% | 5.07% | R + 8.22 |
| SD38 (East San Diego Co.) | 499,912 | 29.23% | 37.90% | 27.32% | 5.55% | R + 8.67 |
| SD40 (S. San Diego) | 436,847 | 44.39% | 18.50% | 32.81% | 4.31% | D + 25.89 |
| * Includes "unknown" in some counties that appeared to have moved the prior "Decline to State" to NPP when it was created *Includes qualified third parties and "other" ***This is the absolute split of registrations between the two parties and does not necessarily predict race outcome. There is a growing number of No Party Preference voters that in narrow-margin districts are frequently the decision-makers. Source: California Secretary of State | ||||||