Filing Period Extended for Three Contra Costa County Offices

Deadline pushed to March 11 after incumbent decides not to run

Published on Mar. 9, 2026

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The filing period for three Contra Costa County offices - Assessor, Auditor-Controller, and County Superintendent of Schools - has been extended until March 11, 2026, after the incumbent in one of the races did not file to run for re-election by the original deadline of March 6.

Why it matters

This extension allows non-incumbent candidates additional time to file nomination documents and get on the ballot for these important county-level positions, which oversee key functions like property assessments, financial audits, and public education administration.

The details

The Contra Costa County Clerk-Recorder's Office Elections Division announced the filing period extension, which applies only to non-incumbent candidates. Candidates must obtain and file their nomination documents in person at 555 Escobar Street in Martinez between 8:00 a.m. and 5:00 p.m. by the new March 11 deadline.

  • The original filing deadline was March 6, 2026.
  • The new extended filing deadline is March 11, 2026.

The players

Contra Costa County Clerk-Recorder's Office Elections Division

The county agency responsible for administering elections and candidate filings.

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What’s next

Candidates have until March 11 to file their nomination documents in order to appear on the June 2nd primary ballot for these three Contra Costa County offices.

The takeaway

This filing extension ensures a competitive election process for these important county positions by giving non-incumbent candidates more time to get on the ballot after the incumbent decided not to run.