Or. Rev. Stat. § 255.288
At any election in which the question of establishing or changing the exterior boundaries of a district or the question of establishing or changing boundaries of electoral zones or subdistricts within a district is submitted to a vote, the elections officer shall provide a map indicating the proposed boundaries. The elections officer shall provide the map by:
[1983 c.350 §74; 1993 c.493 §47; 2007 c.154 §52]