Voter registration as of October 22, 2018
Voter registration trends by district
 District
 | Registered Voters | Democratic %
| Republican %
| No Party Preference %* | Other %**
| Partisan Split***
|
|---|---|---|---|---|---|---|
| AD01 (Northeast Cal) | 280,422 | 28.33% | 40.73% | 20.79% | 10.16% | R + 12.40 |
| AD02 (North Coast) | 265,611 | 46.71% | 21.75% | 25.03% | 6.51% | D + 24.96 |
| AD03 (Butte-Tehama-Yuba) | 241,508 | 31.22% | 36.97% | 25.33% | 6.48% | R + 5.75 |
| AD04 (Napa/Yolo/Dixon) | 257,099 | 45.33% | 22.26% | 27.14% | 5.27% | D + 23.07 |
| AD05 (Foothills) | 250,559 | 29.90% | 39.60% | 23.94% | 6.55% | R + 9.70 |
| AD06 (Roseville) | 312,278 | 28.29% | 41.62% | 24.54% | 5.55% | R + 13.33 |
| AD07 (Sacramento) | 240,480 | 47.10% | 19.07% | 28.45% | 5.38% | D + 28.03 |
| AD08 (East Sacramento Co.) | 257,663 | 38.45% | 30.61% | 25.34% | 5.60% | D + 7.84 |
| AD09 (South Sacramento) | 246,180 | 44.36% | 24.90% | 26.19% | 4.55% | D + 19.46 |
| AD10 (Marin-Petaluma) | 282,111 | 54.38% | 15.67% | 25.42% | 4.52% | D + 38.71 |
| AD11 (Fairfield-Delta) | 259,375 | 44.59% | 23.33% | 27.18% | 4.89% | D + 21.26 |
| AD12 (Modesto) | 245,309 | 33.53% | 37.73% | 23.53% | 5.20% | R + 4.20 |
| AD13 (Stockton) | 221,361 | 46.95% | 23.61% | 25.44% | 4.00% | D + 23.34 |
| AD14 (Concord) | 268,409 | 50.05% | 18.00% | 27.36% | 4.59% | D + 32.05 |
| AD15 (Berkeley) | 296,873 | 64.91% | 5.79% | 25.44% | 3.87% | D + 59.12 |
| AD16 (Tri-Valley) | 309,564 | 40.48% | 26.46% | 28.92% | 4.14% | D + 14.02 |
| AD17 (East SF) | 290,489 | 59.28% | 5.07% | 32.11% | 3.54% | D + 54.21 |
| AD18 (Oakland) | 274,664 | 61.82% | 6.20% | 27.79% | 4.19% | D + 55.62 |
| AD19 (West SF) | 270,521 | 53.26% | 9.07% | 34.35% | 3.33% | D + 44.19 |
| AD20 (Hayward) | 235,608 | 52.26% | 12.86% | 30.95% | 3.93% | D + 39.40 |
| AD21 (Merced) | 187,124 | 43.29% | 28.41% | 23.60% | 4.70% | D + 14.88 |
| AD22 (San Mateo) | 268,834 | 49.81% | 16.01% | 30.55% | 3.63% | D + 33.80 |
| AD23 (Fresno) | 278,278 | 33.07% | 38.89% | 22.62% | 5.43% | R + 5.82 |
| AD24 (Palo Alto-Mountain View) | 243,829 | 48.55% | 15.47% | 32.83% | 3.16% | D + 33.08 |
| AD25 (Fremont-Sta Clara) | 215,077 | 44.62% | 14.68% | 37.30% | 3.40% | D + 29.94 |
| AD26 (Tulare) | 184,549 | 30.73% | 39.43% | 24.96% | 4.88% | R + 8.70 |
| AD27 (San Jose) | 200,680 | 48.28% | 13.84% | 34.35% | 3.53% | D + 34.44 |
| AD28 (Campbell-Saratoga) | 258,138 | 43.78% | 19.90% | 32.70% | 3.62% | D + 23.88 |
| AD29 (Monterey) | 284,997 | 49.19% | 18.76% | 27.18% | 4.87% | D + 30.43 |
| AD30 (East Monterey) | 203,190 | 49.53% | 20.22% | 26.44% | 3.82% | D + 29.31 |
| AD31 (W. Fresno) | 182,038 | 44.99% | 24.85% | 25.66% | 4.50% | D + 20.14 |
| AD32 (Kings) | 149,388 | 45.54% | 24.94% | 25.75% | 3.77% | D + 20.60 |
| AD33 (SB High Desert) | 213,069 | 32.51% | 34.98% | 25.58% | 6.94% | R + 2.47 |
| AD34 (Bakersfield) | 252,298 | 26.90% | 42.08% | 25.76% | 5.25% | R + 15.18 |
| AD35 (San Luis Obispo) | 252,891 | 34.78% | 34.28% | 25.44% | 5.50% | R + -0.50 |
| AD36 (Palmdale) | 232,262 | 38.99% | 30.36% | 25.16% | 5.49% | D + 8.63 |
| AD37 (Santa Barbara) | 272,440 | 44.81% | 23.52% | 26.64% | 5.03% | D + 21.29 |
| AD38 (Santa Clarita) | 288,394 | 34.48% | 34.12% | 26.38% | 5.02% | R + -0.36 |
| AD39 (E. San Fernando Valley) | 232,809 | 51.04% | 14.04% | 30.23% | 4.69% | D + 37.00 |
| AD40 (Redlands) | 233,405 | 40.71% | 30.38% | 24.11% | 4.81% | D + 10.33 |
| AD41 (Pasadena) | 287,253 | 43.66% | 26.48% | 25.23% | 4.63% | D + 17.18 |
| AD42 (Yucaipa) | 237,535 | 34.44% | 36.04% | 23.84% | 5.67% | R + 1.60 |
| AD43 (Burbank/Glendale) | 282,591 | 46.17% | 19.01% | 30.41% | 4.41% | D + 27.16 |
| AD44 (Ventura Co) | 243,602 | 40.67% | 29.29% | 25.32% | 4.72% | D + 11.38 |
| AD45 (W. San Fernando Valley) | 274,612 | 47.42% | 20.84% | 27.20% | 4.54% | D + 26.58 |
| AD46 (Sherman Oaks) | 249,749 | 52.09% | 13.68% | 29.63% | 4.61% | D + 38.41 |
| AD47 (Rialto) | 195,278 | 47.64% | 18.44% | 29.31% | 4.61% | D + 29.20 |
| AD48 (West Covina) | 222,695 | 45.71% | 21.28% | 28.40% | 4.60% | D + 24.43 |
| AD49 (Monterey Park) | 211,002 | 41.00% | 18.44% | 36.83% | 3.73% | D + 22.56 |
| AD50 (West LA) | 332,577 | 51.78% | 15.09% | 28.50% | 4.63% | D + 36.69 |
| AD51 (East LA) | 229,388 | 58.64% | 8.36% | 28.84% | 4.16% | D + 50.28 |
| AD52 (Ontario) | 194,924 | 45.99% | 20.48% | 28.63% | 4.90% | D + 25.51 |
| AD53 (Downtown LA) | 189,527 | 56.16% | 7.92% | 31.76% | 4.16% | D + 48.24 |
| AD54 (Culver City) | 300,970 | 60.87% | 8.54% | 26.57% | 4.02% | D + 52.33 |
| AD55 (Yorba Linda) | 247,494 | 32.07% | 34.46% | 29.58% | 3.90% | R + 2.39 |
| AD56 (Imperial County) | 179,120 | 46.18% | 23.45% | 26.16% | 4.21% | D + 22.73 |
| AD57 (Whittier) | 239,715 | 47.00% | 21.76% | 26.89% | 4.35% | D + 25.24 |
| AD58 (Downey) | 234,972 | 51.24% | 16.59% | 28.06% | 4.11% | D + 34.65 |
| AD59 (South LA) | 199,986 | 63.56% | 4.75% | 27.82% | 3.87% | D + 58.81 |
| AD60 (Corona) | 212,282 | 39.51% | 31.58% | 24.74% | 4.17% | D + 7.93 |
| AD61 (Riverside) | 207,229 | 45.65% | 24.54% | 25.37% | 4.44% | D + 21.11 |
| AD62 (Inglewood) | 268,035 | 57.56% | 10.83% | 27.33% | 4.28% | D + 46.73 |
| AD63 (South Gate) | 208,552 | 54.42% | 13.36% | 27.89% | 4.32% | D + 41.06 |
| AD64 (Carson) | 237,732 | 60.74% | 8.00% | 27.28% | 3.97% | D + 52.74 |
| AD65 (Fullerton) | 213,161 | 40.43% | 28.90% | 27.04% | 3.62% | D + 11.53 |
| AD66 (Torrance) | 288,836 | 39.91% | 28.35% | 27.42% | 4.31% | D + 11.56 |
| AD67 (Murrieta) | 244,712 | 28.48% | 39.71% | 26.16% | 5.65% | R + 11.23 |
| AD68 (Tustin) | 262,106 | 30.71% | 36.42% | 28.62% | 4.25% | R + 5.71 |
| AD69 (Santa Ana) | 154,873 | 50.30% | 17.99% | 28.13% | 3.58% | D + 32.31 |
| AD70 (Long Beach) | 272,390 | 48.41% | 18.93% | 27.36% | 5.30% | D + 29.48 |
| AD71 (East SD Co.) | 258,550 | 27.65% | 39.84% | 26.63% | 5.87% | R + 12.19 |
| AD72 (Seal Beach) | 241,302 | 32.36% | 35.42% | 28.09% | 4.12% | R + 3.06 |
| AD73 (Dana Point) | 284,505 | 27.31% | 41.98% | 26.11% | 4.60% | R + 14.67 |
| AD74 (Irvine) | 280,690 | 31.09% | 35.71% | 28.70% | 4.50% | R + 4.62 |
| AD75 (Escondido) | 248,412 | 28.07% | 38.16% | 28.08% | 5.69% | R + 10.09 |
| AD76 (Carlsbad) | 252,864 | 32.94% | 31.58% | 29.92% | 5.56% | D + 1.36 |
| AD77 (North SD) | 283,927 | 31.90% | 31.00% | 32.44% | 4.66% | R + -0.90 |
| AD78 (Coastal SD) | 292,938 | 41.80% | 20.92% | 31.99% | 5.30% | D + 20.88 |
| AD79 (East SD) | 268,037 | 41.08% | 21.68% | 32.33% | 4.92% | D + 19.40 |
| AD80 (South SD) | 222,474 | 45.51% | 14.96% | 35.33% | 4.20% | D + 30.55 |
| BOE1 (Inland) | 4,686,082 | 37.36% | 31.85% | 25.26% | 5.52% | D + 5.51 |
| BOE2 (Northwest) | 5,150,559 | 49.43% | 17.13% | 29.15% | 4.29% | D + 32.30 |
| BOE3 (LA/Ventura) | 5,043,280 | 49.89% | 17.41% | 28.29% | 4.41% | D + 32.48 |
| BOE4 (SoCal) | 4,816,450 | 36.22% | 30.77% | 28.26% | 4.75% | D + 5.45 |
| Statewide (Statewide) | 19,696,371 | 43.45% | 24.04% | 27.79% | 4.72% | D + 19.41 |
| CD01 (Northeast Cal) | 409,076 | 29.32% | 40.00% | 22.10% | 8.58% | R + 10.68 |
| CD02 (North Coast) | 426,319 | 50.34% | 18.84% | 25.18% | 5.65% | D + 31.50 |
| CD03 (Yolano-Yuba-Lake) | 366,434 | 38.98% | 28.07% | 27.44% | 5.51% | D + 10.91 |
| CD04 (Foothills) | 458,250 | 28.53% | 41.27% | 23.55% | 6.66% | R + 12.74 |
| CD05 (Napa-Santa Rosa) | 392,950 | 50.53% | 17.95% | 26.64% | 4.88% | D + 32.58 |
| CD06 (Sacramento) | 353,497 | 48.57% | 18.33% | 27.88% | 5.21% | D + 30.24 |
| CD07 (E. Sac Co) | 408,727 | 37.90% | 31.13% | 25.76% | 5.20% | D + 6.77 |
| CD08 (SB High Desert) | 327,669 | 31.99% | 36.22% | 25.03% | 6.76% | R + 4.23 |
| CD09 (San Joaquin) | 364,268 | 43.72% | 27.19% | 24.73% | 4.36% | D + 16.53 |
| CD10 (Stanislaus) | 350,508 | 37.30% | 33.78% | 23.85% | 5.07% | D + 3.52 |
| CD11 (Contra Costa) | 415,511 | 49.93% | 19.35% | 26.63% | 4.09% | D + 30.58 |
| CD12 (San Francisco) | 442,999 | 57.28% | 6.42% | 32.77% | 3.54% | D + 50.86 |
| CD13 (Oakland) | 445,991 | 63.83% | 5.49% | 26.50% | 4.17% | D + 58.34 |
| CD14 (San Mateo) | 385,737 | 50.96% | 13.58% | 31.98% | 3.49% | D + 37.38 |
| CD15 (Hawyard-Pleas-Liv) | 390,708 | 46.83% | 18.07% | 30.97% | 4.12% | D + 28.76 |
| CD16 (Merced) | 276,807 | 44.07% | 25.17% | 26.09% | 4.67% | D + 18.90 |
| CD17 (Milpitas) | 325,649 | 43.96% | 14.82% | 38.02% | 3.21% | D + 29.14 |
| CD18 (Silicon Valley) | 405,776 | 46.58% | 18.74% | 30.95% | 3.73% | D + 27.84 |
| CD19 (San Jose) | 342,048 | 46.86% | 17.41% | 31.92% | 3.82% | D + 29.45 |
| CD20 (Monterey) | 348,185 | 51.44% | 18.08% | 26.20% | 4.28% | D + 33.36 |
| CD21 (Kings) | 230,632 | 43.27% | 27.13% | 25.59% | 4.01% | D + 16.14 |
| CD22 (Visalia) | 362,192 | 31.67% | 40.21% | 23.06% | 5.06% | R + 8.54 |
| CD23 (Kern) | 356,703 | 28.50% | 40.59% | 25.55% | 5.36% | R + 12.09 |
| CD24 (Santa Barbara) | 395,599 | 38.94% | 29.63% | 26.19% | 5.23% | D + 9.31 |
| CD25 (S. Clarita/Palmdale) | 394,998 | 36.70% | 32.38% | 25.74% | 5.18% | D + 4.32 |
| CD26 (Ventura Co) | 378,316 | 41.41% | 28.15% | 25.48% | 4.96% | D + 13.26 |
| CD27 (Pasadena) | 387,165 | 42.83% | 22.15% | 30.94% | 4.07% | D + 20.68 |
| CD28 (Hollywood) | 437,224 | 48.81% | 16.79% | 29.87% | 4.53% | D + 32.02 |
| CD29 (E. San Fernando Valley) | 325,397 | 52.52% | 12.05% | 30.91% | 4.52% | D + 40.47 |
| CD30 (W. San Fernando Valley) | 441,033 | 48.36% | 19.75% | 27.28% | 4.61% | D + 28.61 |
| CD31 (San Bernardino) | 341,347 | 41.85% | 27.73% | 25.59% | 4.83% | D + 14.12 |
| CD32 (W. Covina) | 332,211 | 46.03% | 20.66% | 28.74% | 4.56% | D + 25.37 |
| CD33 (LA Coast) | 481,240 | 44.21% | 22.96% | 28.20% | 4.63% | D + 21.25 |
| CD34 (Downtown LA) | 317,186 | 56.31% | 8.58% | 30.90% | 4.21% | D + 47.73 |
| CD35 (Ontario) | 287,433 | 46.95% | 19.07% | 29.19% | 4.79% | D + 27.88 |
| CD36 (Coachella Valley) | 323,516 | 38.98% | 32.18% | 23.82% | 5.02% | D + 6.80 |
| CD37 (Culver City) | 430,907 | 61.45% | 7.91% | 26.62% | 4.02% | D + 53.54 |
| CD38 (Whittier) | 371,599 | 47.97% | 20.62% | 27.08% | 4.33% | D + 27.35 |
| CD39 (Fullerton) | 370,443 | 33.92% | 33.39% | 28.85% | 3.84% | R + -0.53 |
| CD40 (Downey) | 282,177 | 57.92% | 9.89% | 28.19% | 4.00% | D + 48.03 |
| CD41 (Riverside) | 305,353 | 45.63% | 25.08% | 24.93% | 4.36% | D + 20.55 |
| CD42 (Corona) | 364,388 | 29.81% | 39.19% | 25.83% | 5.17% | R + 9.38 |
| CD43 (Inglewood) | 378,888 | 56.17% | 13.00% | 26.85% | 3.98% | D + 43.17 |
| CD44 (Carson) | 344,841 | 58.58% | 9.82% | 27.45% | 4.16% | D + 48.76 |
| CD45 (Irvine) | 420,237 | 30.57% | 36.39% | 28.95% | 4.09% | R + 5.82 |
| CD46 (Santa Ana) | 256,094 | 46.96% | 21.80% | 27.53% | 3.72% | D + 25.16 |
| CD47 (Long Beach) | 378,615 | 43.43% | 23.83% | 27.89% | 4.85% | D + 19.60 |
| CD48 (Huntington Beach) | 407,767 | 29.80% | 38.42% | 27.20% | 4.59% | R + 8.62 |
| CD49 (Carlsbad) | 400,891 | 31.01% | 34.77% | 28.96% | 5.26% | R + 3.76 |
| CD50 (East SD Co.) | 384,893 | 26.76% | 40.05% | 27.40% | 5.78% | R + 13.29 |
| CD51 (S. SD - Imperial) | 317,201 | 45.96% | 15.44% | 34.26% | 4.34% | D + 30.52 |
| CD52 (San Diego) | 426,663 | 34.26% | 28.27% | 32.54% | 4.93% | D + 5.99 |
| CD53 (La Mesa) | 426,113 | 41.77% | 22.06% | 31.07% | 5.09% | D + 19.71 |
| SD02 (North Coast) | 536,038 | 49.82% | 19.12% | 25.45% | 5.61% | D + 30.70 |
| SD04 (Roseville-Yuba-Tehama) | 504,794 | 32.34% | 36.02% | 25.46% | 6.18% | R + 3.68 |
| SD06 (Sacramento) | 497,336 | 47.66% | 20.06% | 27.37% | 4.91% | D + 27.60 |
| SD08 (Foothills) | 535,238 | 32.16% | 39.00% | 23.15% | 5.69% | R + 6.84 |
| SD10 (Hywd-Frmnt-Snta Clra) | 452,487 | 48.86% | 13.59% | 33.86% | 3.69% | D + 35.27 |
| SD12 (Salinas-Merced) | 354,217 | 44.60% | 26.24% | 24.99% | 4.17% | D + 18.36 |
| SD14 (Fresno/Bakersfield) | 309,072 | 44.30% | 25.75% | 25.95% | 4.00% | D + 18.55 |
| SD16 (Kern) | 480,229 | 51.71% | 13.80% | 29.89% | 4.60% | D + 37.91 |
| SD16 (Kern) | 452,102 | 27.98% | 40.95% | 25.47% | 5.61% | R + 12.97 |
| SD18 (San Fernando Valley) | 480,229 | 51.71% | 13.80% | 29.89% | 4.60% | D + 37.91 |
| SD20 (Ontario) | 390,202 | 46.82% | 19.46% | 28.97% | 4.76% | D + 27.36 |
| SD22 (San Gabriel Valley) | 419,586 | 45.67% | 17.34% | 32.88% | 4.11% | D + 28.33 |
| SD24 (East LA) | 427,191 | 57.45% | 8.22% | 30.20% | 4.14% | D + 49.23 |
| SD26 (Coast LA) | 639,325 | 47.03% | 19.75% | 28.60% | 4.62% | D + 27.28 |
| SD28 (Coachella Valley) | 451,978 | 33.94% | 36.05% | 24.81% | 5.20% | R + 2.11 |
| SD30 (Culver City) | 521,539 | 62.80% | 6.53% | 26.68% | 4.00% | D + 56.27 |
| SD32 (Whittier) | 488,723 | 47.55% | 20.93% | 27.24% | 4.28% | D + 26.62 |
| SD34 (Westminster/Santa Ana) | 416,542 | 39.14% | 29.17% | 27.65% | 4.05% | D + 9.97 |
| SD36 (Carlsbad) | 542,953 | 29.92% | 37.13% | 27.89% | 5.06% | R + 7.21 |
| SD38 (East San Diego Co.) | 523,163 | 29.08% | 37.02% | 28.39% | 5.51% | R + 7.94 |
| SD40 (S. San Diego) | 453,184 | 43.71% | 18.20% | 33.78% | 4.31% | D + 25.51 |
| * 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 | ||||||