Oregon Revised Statutes Procedure in Civil Proceedings § 14.260

(1) Any party to or any attorney appearing in any cause, matter or proceeding in a circuit court may establish the belief described in ORS 14.250 by motion supported by affidavit that the party or attorney believes that the party or attorney cannot have a fair and impartial trial or hearing before the judge, and that it is made in good faith and not for the purpose of delay. No specific grounds for the belief need be alleged. The motion shall be allowed unless the judge moved against, or the presiding judge for the judicial district, challenges the good faith of the affiant and sets forth the basis of the challenge. In the event of a challenge, a hearing shall be held before a disinterested judge. The burden of proof is on the challenging judge to establish that the motion was made in bad faith or for the purposes of delay.

(2) The affidavit shall be filed with the motion at any time prior to final determination of the cause, matter or proceedings in uncontested cases, and in contested cases before or within five days after the cause, matter or proceeding is at issue upon a question of fact or within 10 days after the assignment, appointment and qualification or election and assumption of office of another judge to preside over the cause, matter or proceeding.

(3) A motion to disqualify a judge may not be made after the judge has ruled upon any petition, demurrer or motion other than a motion to extend time in the cause, matter or proceeding. A motion to disqualify a judge or a judge pro tem, assigned by the Chief Justice of the Supreme Court to serve in a county other than the county in which the judge or judge pro tem resides may not be filed more than five days after the party or attorney appearing in the cause receives notice of the assignment.

(4) In judicial districts having a population of 200,000 or more, the affidavit and motion for change of judge shall be made at the time and in the manner prescribed in ORS 14.270.

(5) In judicial districts having a population of 100,000 or more, but less than 200,000, the affidavit and motion for change of judge shall be made at the time and in the manner prescribed in ORS 14.270 unless the circuit court makes local rules under ORS 3.220 adopting the procedure described in this section.

(6) A party or attorney may not make more than two applications in any cause, matter or proceeding under this section.