California’s June 2026 Primary Election: How and When to Cast Your Ballot
Why It Matters
California voters head to the polls on June 2, 2026, for a primary election that will shape the state’s political leadership at both the state and federal levels. The contest includes a competitive governor’s race and newly redrawn congressional districts, making this one of the most consequential California primary elections in recent years.
With registration deadlines approaching and vote-by-mail ballots already being prepared for delivery, eligible Californians need to act quickly to ensure their voices are counted.
What Happened
The June 2 primary will feature a governor’s race that has already seen significant changes. The field has narrowed to eight prominent candidates after former Rep. Eric Swalwell withdrew amid sexual assault and misconduct allegations, and former state Controller Betty Yee ended her campaign, citing a lack of resources and support. For more on the shifting dynamics of the governor’s race, see California governor candidates spar to get ahead after Eric Swalwell dropped out.
California voters will also cast ballots under new congressional district boundaries for the first time, following the passage of Proposition 50 in last November’s election. The new boundaries affect races at the federal level across the state.
Additionally, voters displaced by recent wildfires — including survivors of the Pacific Palisades and Altadena fires — face unique logistical challenges in casting their ballots, with county officials urging affected residents to update their mailing addresses as soon as possible.
By the Numbers
May 4 — Ballots begin being mailed to all registered California voters.
May 5 — Voters may begin returning completed mail-in ballots at designated secured drop-off locations.
May 18 — Deadline to register to vote in the June 2 primary.
May 23 — Early in-person voting centers open, but only in counties participating under the Voter’s Choice Act.
May 30 — Early in-person voting locations open statewide.
8 — The number of prominent candidates still competing in the governor’s race after recent withdrawals.
Zoom Out
California’s June primary comes amid a broader national environment of heightened interest in state-level executive races. The governor’s contest has drawn national attention due to the abuse allegations against a leading Democratic candidate, which have significantly reshaped the field and injected uncertainty into a race that was once considered more predictable.
Across the country, states are navigating post-redistricting elections for the first time following the 2025 reapportionment cycle, and California’s use of Proposition 50’s newly drawn congressional lines reflects that national trend. Election integrity advocates have noted that clear voter guidance — particularly around mail-in balloting deadlines and same-day registration rules — is essential to ensuring valid ballots are not disqualified on procedural grounds.
What’s Next
Registered voters should expect their mail-in ballots to arrive beginning May 4. Those who have not yet registered have until May 18 to do so online through the California Secretary of State’s website, using a state driver’s license or identification card number, the last four digits of a Social Security number, and a date of birth.
Voters registering within 15 days of the election must complete the same-day voter registration process in person at a county elections office or polling location.
Displaced wildfire survivors in Los Angeles County are urged to contact the Registrar-Recorder/County Clerk’s office at (800) 815-2666 to update their mailing address or request a replacement ballot sent to their temporary address.
Vote-by-mail ballots must be postmarked no later than June 2. Officials warn that due to changes in U.S. Postal Service operations, many post offices no longer postmark mail the same day it is received, and voters are advised to mail ballots before election day or request a hand-stamped postmark from a postal employee inside the post office.
Election results from the June 2 primary will determine which candidates advance to the November 2026 general election, including the final two contenders in the governor’s race under California’s top-two primary system.