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November 3, 2026·Filing Deadline: August 7, 2026·Seats on ballot: Council At-Large + District 5
Irvine is Orange County’s third-largest city (~310,000 residents) and home to UC Irvine, the Irvine Company’s massive master-planned development portfolio, and a growing technology and biomedical employment sector. Campaign finance in Irvine races often reflects competition between real estate and development interests, public employee unions, and the city’s prominent research and professional class.
The November 2026 ballot covers two seats: the at-large council seat held by Kathleen Treseder (term expires December 2026) and District 5, where Betty Martinez Franco was appointed in April 2025 to fill a vacancy and must now face voters.
The remaining five seats — Mayor Agran and Districts 1 through 4, all elected or re-elected in November 2024 — are not on the 2026 ballot. Their terms expire December 2028.
Citywide — elected by all Irvine voters. Irvine (~310,000 residents) is Orange County's third-largest city and home to UC Irvine, the Irvine Company's master-planned residential communities, and a major technology and biomedical employment base. The at-large council seat is a legacy of the city's pre-2020 all at-large council structure.
Incumbent
UC Irvine professor of ecology and evolutionary biology. Elected November 2022. Current four-year term ends December 2026. FPPC committee #1436692, tracked via CIRV NetFile portal.
Incumbent — re-election status unconfirmed as of May 2026
Declared Challengers
No challengers have publicly declared as of May 2026. Candidate filing deadline is August 7, 2026.
Data coverage: SoCal Public Ledger tracks Treseder's committee (FPPC #1436692) through the CIRV NetFile portal.
East Irvine, covering portions of the city east of the 405 freeway, including newer residential developments, Great Park neighborhoods, and areas near the Orange County Great Park.
Appointed Incumbent
Appointed to the District 5 seat in April 2025 to fill a vacancy. The appointment serves until November 2026, at which point voters decide the remaining term. FPPC committee #1484186, tracked via CIRV NetFile portal.
Appointed — seat on November 2026 ballot
Declared Challengers
No challengers have publicly declared as of May 2026. Filing deadline is August 7, 2026.
Data coverage: SoCal Public Ledger tracks Martinez Franco's committee (FPPC #1484186) through the CIRV NetFile portal.
These officials were elected in November 2024 and serve through December 2028.
Re-elected November 2024. Agran is one of Irvine's most consequential political figures — a Democrat who has served multiple mayoral terms since the 1990s and championed the Great Park project on the former El Toro Marine Corps air station. Term ends December 2028.
All Irvine officials with campaign finance data tracked in this system. Click any name to view their full contribution history and voting record.
Voter registration and vote-by-mail dates are estimates based on California Elections Code. Confirm at ocvote.gov.
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