Oregon Revised Statutes Procedure in Civil Proceedings § 14.110

(a) That the action or suit has not been commenced in the proper county;

(b) That the judge is a party to, or directly interested in the event of the action or suit, or connected by consanguinity or affinity within the third degree, with the adverse party or those for whom the adverse party prosecutes or defends;

(c) That the convenience of witnesses and the parties would be promoted by such change; or

(d) In an action, that the judge or the inhabitants of the county are so prejudiced against the party making the motion that the party cannot expect an impartial trial before the judge or in the county, as the case may be.