Oregon Revised Statutes Agriculture § 568.380

(1) The State Department of Agriculture shall pay all expenses for issuance of the notices and conduct of the hearings and referenda, and shall supervise the conduct of the hearings and referenda. It shall issue appropriate regulations governing the conduct of the hearings and referenda.

(2) No informalities in the conduct of the referendum or in any matters relating thereto shall invalidate the referendum or the result thereof, if notice thereof was given substantially as provided in ORS 568.310 or 568.320 and the referendum was fairly conducted.