ORS 247.125: Alteration of registration card prohibited; exceptions.

(1) A person may not alter any information supplied on a registration card except:

      (a) An elections officer in the performance of official duties.

      (b) The person who supplies the information on the registration card for the purpose of registering to vote.

      (2) A county clerk may not register a person who alters any information printed on a registration card regarding:

      (a) The indication that the person is a citizen of the United States; or

      (b) The signature statement in which the person attests to the person’s qualifications as an elector and the information supplied on the voter registration card.