Overview

• Aguirre secured 53.22% of votes in the July 1 runoff and was declared the winner after John McCann conceded on Wednesday morning.
• The outcome ends a 2–2 partisan deadlock that had stalled board action on reserve policies, legal aid for detained immigrants and cross-border environmental funding.
• Voter turnout in the special election was roughly 18%, reflecting typical participation levels in off-cycle contests.
• District 1 spans more than 650,000 residents across Chula Vista, Imperial Beach, National City and multiple San Diego neighborhoods and unincorporated communities.
• Aguirre campaigned on treating the Tijuana River sewage pollution as a public health emergency and on securing county infrastructure funding and EPA Superfund designation.