Registrar of Voters Office
The Registrar of Voters Office performs a range of election-related duties and and other public services that increase citizen participation and education.
Announcements
As of July 1, 2025, the Sonoma County Registrar of Voters Office is its own department and no longer a division of the Sonoma County Clerk-Recorder-Assessor. On July 22, 2025, the Sonoma County Board of Supervisors officially appointed Evelyn Mendez to serve as head of the department. For more information, see the press releases below:
- Board of Supervisors approves plan to separate Registrar of Voters from other elected duties (1/28/25)
- Sonoma County to appoint Evelyn Mendez as first standalone Registrar of Voters (7/14/25)
November 4, 2025, Statewide Special Election*
*This election's original name was "November 4, 2025, Uniform District Election." It changed to "November 4, 2025, Statewide Special Election" in late August. As a result, you may encounter instances where the election is referred to by its old name. However, both names now refer to the exact same election and can be used interchangeably.
What's New
- Online Version of County Voter Guide
- List of Vote Centers & Drop Boxes in Sonoma County
- Map of Vote Centers & Drop Boxes in Sonoma County
Background
On August 21, 2025, Governor Gavin Newsom signed legislation calling a Statewide Special Election to be held on November 4, 2025, so voters can decide whether or not to pass Proposition 50, a legislative constitutional amendment authorizing temporary changes to California's Congressional district maps.
In addition, two local jurisdictions in Sonoma County were already set to have elections on November 4:
- Timber Cove County Water District (District Director)
- Petaluma Joint Union High School District (Measure I - Parcel Tax)
These two smaller elections are being consolidated with the statewide special election.
More Info
For more information on Proposition 50, visit the California Secretary of State's 2025 Statewide Special Election page.
For more information on the contests in Timber Cove County Water District and/or Petaluma Joint Union High School District, visit our November 4, 2025, Statewide Special Election page.
Voter Quick Links
Sonoma County voters invited to attend disability and language workshops
Sonoma County Registrar of Voters Evelyn Mendez announced two workshops taking place on Oct. 1 and Oct. 14 to educate voters about the upcoming Nov. 4 Statewide Special Election.
Upcoming Events
Voter Education Workshop #1 (11/4/25 Election): Voters with Disabilities
Voter Education Workshop #2 (11/4/25 Election): Voters Whose Primary Language Is Not English
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