Oregon Revised Statutes Elections § 251.175

(1) Except as provided in subsection (2) of this section, not later than the 20th day before a primary election, general election or special election for which a voters' pamphlet has been prepared, the Secretary of State shall cause the voters' pamphlet to be mailed to each post-office mailing address in Oregon, and shall use any additional means of distribution necessary to make the pamphlet available to electors.

(2) For any special election described in ORS 251.022 that is not held statewide, or for any other state special election that is not held statewide, the Secretary of State by rule may prescribe methods for distributing the voters' pamphlet prepared for the election. The rule shall require the secretary to mail the pamphlet to at least each elector whose registration is determined to be active on the 21st day before the date of the election and who is eligible to vote in the election. The rule may specify other methods of distribution. Voters' pamphlets prepared for the election shall be mailed not later than the date ballots are mailed to electors as provided in ORS 254.470.