A San Luis Obispo County ballot drop box

SLO County Ballots Mailing Early; Official Ballot Drop Boxes to Open October 1

Author: Erin Clausen
Date: 9/29/2026 10:54 AM

SLO County ballots are heading to voters earlier than expected for the November 3 General Election, with the County’s 18 official ballot drop boxes opening Thursday, October 1, so voters can securely return their ballots as soon as they’re ready. The Elections Office also announced election-season hours beginning October 5 and the October 26 opening of its satellite Elections Office in Atascadero.

San Luis Obispo County voters can expect to see their ballots arriving a little earlier than originally anticipated for the November 3 General Election.

The SLO County Elections Office has completed preparations ahead of schedule, allowing ballots and County Voter Information Guides to be delivered to the U.S. Postal Service’s Goleta processing facility on Wednesday, September 30. The Elections Office expects USPS to begin sending the materials to voters that same day.

With ballot packets heading to voters early, the County is also moving up the opening of its 18 official ballot drop boxes to Thursday, October 1. The boxes had previously been scheduled to open October 5 and 6, depending on the operating days of individual locations.

“We’re pleased to be able to get ballots into voters’ hands a little earlier this election,” said County Clerk-Recorder Elaina Cano. “Opening our official drop boxes at the same time means voters who are ready to make their choices can return their ballots right away using a secure County ballot drop box.”

Voters do not need to wait until Election Day to vote. Once they receive their ballot, they may complete and return it as soon as they are comfortable doing so. Cano recommends that voters who vote early use an official drop box, bring their ballot to the Elections Office, or if they choose to mail it back, that they allow plenty of time and mail it at least a week before Election Day.

“Ballots mailed at the last minute risk getting a late postmark or arriving past the deadline, and we can’t count those,” Cano says. “Voting early also means your ballot will be included in that first batch of Election Night results and will speed up the counting process overall.”

Election-Season Hours Begin October 5
Beginning Monday, October 5, regular Clerk-Recorder office hours will change, with the office closing to the public at 4 p.m. each weekday. Election services, however, will remain available later. A dedicated Elections service window at the San Luis Obispo office will be open from 8 a.m. to 5 p.m., Monday through Friday, beginning October 5 and continuing through the completion of the official election canvass in late November. It will be open from 7 a.m. to 8 p.m. on Election Day, Tuesday, November 3.

The Elections window and the full Elections Center will also be open Saturday, October 31, from 9 a.m. to 3 p.m. Voters are welcome to cast their ballot, get a replacement ballot, or observe ballot processing activities during this time.

Atascadero Satellite Elections Office Opens October 26
The County’s satellite Elections Office in Atascadero will open Monday, October 26, providing North County voters with an additional location for in-person election services during the final days of voting.

The Atascadero office will be open:
  • Monday through Friday: 8:30 a.m. to 4 p.m.
  • Election Day, Tuesday, November 3: 7 a.m. to 8 p.m.

The County has opened the Atascadero location earlier in some previous election cycles. Based on historically lighter use during the earlier weeks of the voting period, the Elections Office is concentrating staffing at the location during the final week, when voter demand is expected to be greatest.

Voters may continue to access election services at the San Luis Obispo Elections Office throughout the early voting period.

Voters are encouraged to watch their mail for their ballot and County Voter Information Guide and to use official SLO County Elections resources for current information about voting locations, ballot drop boxes, hours, and other election services.

For more information, including a list of drop box locations and polling places, FAQs, and more, visit SloVote.gov/November2026.