A bill for an act relating to county supervisors, concerning county supervisor representation plans and county supervisor vacancies, and including effective date provisions.

SSB 1018 requires counties with a population of 125,000 or more (based on the most recent federal census) or those containing a state university campus to use a district-based election system ("Plan Three") for selecting county supervisors. This replaces previous representation plans and mandates special elections for changes, with new district maps required to be finalized by October 2025 for affected counties. The bill also specifies that vacancies in counties meeting these population or campus criteria must be filled by special election, while smaller counties may appoint replacements. It applies directly to affected counties, altering how supervisors are elected and vacancies are addressed.