2013 ORS § 249.076¹
Qualifications of signers of petitions
(1) A person who is not a member of the same major political party as the candidate for nomination by the major political party may not sign the nominating petition of the candidate.
(2) Any elector may sign:
(a) A nominating petition or certificate of nomination of any candidate for nonpartisan office;
(b) A nominating petition or certificate of nomination of any nonaffiliated candidate; and
(c) Nominating petitions or certificates of nomination for more than one candidate for the same office. [Formerly 249.051; 1981 c.173 §23; 2005 c.797 §63]