Oregon Revised Statutes Miscellaneous Matters Related to Government and Public Affairs § 199.745

(1) The first members of the governing body of the city-county shall be nominated and elected in the manner and at the times prescribed by the city-county charter.

(2) The county clerk shall arrange for, give notice of and conduct the election. The county shall bear the expense of the election.

(3) The charter shall prescribe the date on which the city-county comes into existence and shall include necessary transitional provisions. The charter may provide that it will become effective for specified purposes immediately upon the proclamation of the results of the election on the adoption of the charter.