Oregon Revised Statutes Elections § 254.431

(2)(a) In order for the vote of the elector to be counted, the elector must provide evidence sufficient to disprove the challenge not later than the 14th calendar day after the date of the election.

(b) If the elector does not provide evidence sufficient to disprove a challenge alleging that the signature of the elector on a return identification envelope does not match the signature in the voter registration record for the elector by the 14th calendar day after the date of the election, the registration of the elector shall be considered inactive.

(3)(a) The filing officer may not release as a public record any information that could be used to identify an elector whose ballot has been challenged under this section until the eighth calendar day after the date of an election.

(b) Following the seventh calendar day after the date of an election, the filing officer may disclose as a public record under ORS 192.410 to 192.505 the following information about each elector whose ballot was challenged under this section:

(a) The Secretary of State, for federal or statewide elections and for elections to the office of state Senator or Representative; or

(b) The county clerk, for county, city or district elections.