RCW 29A.32.280 directs a legislative authority submitting a measure to voters to appoint a committee to prepare arguments advocating voters' approval and rejection of the measure. Specifically, RCW 29A.32.280 provides as follows regarding the composition of the committees and the county auditor’s role if the legislative authority fails to appoint committees by the resolution submission deadline:

“[…] The authority shall appoint persons known to favor the measure to serve on the committee advocating approval and shall, whenever possible, appoint persons known to oppose the measure to serve on the committee advocating rejection. Each committee shall have not more than three members, however, a committee may seek the advice of any person or persons. If the legislative authority of a unit of local government fails to make such appointments by the prescribed deadline, the county auditor shall whenever possible make the appointments.”

RCW 29A.32.280