Or. Rev. Stat. § 253.575
(1) Upon receipt of an application made under ORS 253.565, if the applicant’s residence is in the county, the county clerk, without regard to whether the applicant is an elector of the county, shall mail to the applicant a special ballot, instructions for filling in and returning the ballot and an envelope to use for the return. The office address of the clerk shall appear on the front of the envelope. On the back shall appear a statement to be signed by the absent elector, stating that the elector:
(6) If the county clerk determines that a military or overseas elector to whom a replacement ballot has been issued at the request of the elector has voted more than once, the county clerk shall not count any ballot cast by the elector. If the county clerk is required to reissue ballots due to a change on the ballot for any reason, that ballot shall be counted in lieu of any previous ballot issued unless:
[1985 c.720 §3; 1989 c.923 §2; 1991 c.719 §51; 1993 c.713 §61; 1995 c.607 §37; 1999 c.318 §34; 1999 c.410 §36; 2013 c.520 §12; 2017 c.749 §53]