California residents who want to vote in the 2026 midterms but who are not sure if they are registered can check online on the Secretary of State's website or call their county elections office.
Here's what to know about how to check your registration ahead of Tuesday's election.
To check your voter registration status, use the Secretary of State's online search tool, call your county elections office or check online through its website.
The voter registration deadline in California is 15 days before an election. For the 2026 midterms, the voter registration deadline was Oct. 19. However, people can "conditionally" register after the deadline, during the days leading up to and on Election Day.
People eligible to vote in California can register online, by mail, or in person before the registration deadline. The Secretary of State has a website for online registration at registertovote.ca.gov.
To register by mail, a voter registration application can be picked up at a library, Department of Motor Vehicles, elections office or U.S. Post Office. Once filled out, it must be mailed or dropped off in person 15 days before an election.
State law also allows a person to register to vote on the same day as the election. A person seeking to register on Election Day should bring an acceptable form of identification.
Voters typically only need to register once, and they will be able to vote in local and state elections. Re-registration is needed in the following scenarios:
| Alameda | Alameda County Elections Office website or (510) 272-6933 |
| Alpine | (530) 694-2281 |
| Amador | (209) 223-6465 |
| Butte | (530) 552-3400, option 1 |
| Calaveras | (209) 754-6376 |
| Colusa | (530) 458-0500 |
| Contra Costa | Contra Costa County website or (925) 335-7800 |
| Del Norte | (707) 464-7216 |
| El Dorado | (530) 621-7480 |
| Fresno | (559) 600-8683 |
| Glenn | (530) 934-6414 |
| Humboldt | (707) 445-7481 |
| Imperial | (442) 265-1060 |
| Inyo | (760) 878-0224 |
| Kern | (661) 868-3590 |
| Kings | (559) 852-4401 |
| Lake | (707) 263-2372 |
| Lassen | (530) 251-8217 |
| Los Angeles | (800) 815-2666 |
| Madera | (559) 675-7720 |
| Marin | (415) 473-6456 |
| Mariposa | (209) 966-2007 |
| Mendocino | (707) 234-6819 |
| Merced | (209) 385-7541 |
| Modoc | (530) 233-6200 |
| Mono | (760) 932-5537 |
| Monterey | (831) 796-1499 |
| Napa | (707) 253-4321 |
| Nevada | (530) 265-1298 |
| Orange | Orange County website or (714) 567-7600 |
| Placer | (530) 886-5650 |
| Plumas | (530) 283-6256 |
| Riverside | (951) 486-7200 |
| Sacramento | (916) 875-6451 |
| San Benito | (831) 636-4016 |
| San Bernardino | (909) 387-8300 |
| San Diego | San Diego County website or (858) 565-5800 |
| San Francisco | San Francisco County website or (415) 554-4375 |
| San Joaquin | (209) 468-8683 |
| San Luis Obispo | (805) 781-5228 |
| San Mateo | San Mateo County website or (650) 312-5222 |
| Santa Barbara | (805) 568-2200 |
| Santa Clara | (408) 299-8683 |
| Santa Cruz | (831) 454-2060 |
| Shasta | Shasta County website or (530) 225-5730 |
| Sierra | (530) 289-3295 |
| Siskiyou | (530) 842-8084 |
| Solano | (707) 784-6675 |
| Sonoma | (707) 565-6800 |
| Stanislaus | (209) 525-5200 |
| Sutter | (530) 822-7122 |
| Tehama | (530) 527-8190 |
| Trinity | (530) 623-1220 |
| Tulare | (559) 839-2100 |
| Tuolumne | (209) 533-5570 |
| Ventura | (805) 654-2664 |
| Yolo | (530) 666-8133 |
| Yuba | (530) 749-7855 |
Credit: California Secretary of State's Office