Ohio Rev. Code § 2501.13: Filing affidavit of disqualification.

If a judge of the court of appeals allegedly is interested in a proceeding pending before the court in a county of the judge's district, allegedly is related to or has a bias or prejudice for or against a party to a proceeding pending before the court or a party's counsel, allegedly presided in the lower court in the same proceeding, or allegedly otherwise is disqualified to preside in a proceeding pending before the court, any party to the proceeding or the party's counsel may file an affidavit of disqualification with the clerk of the supreme court. The affidavit of disqualification shall be filed and decided in accordance with divisions (B) to (E) of section 2701.03 of the Revised Code, and, upon the filing of the affidavit, the provisions of those divisions apply to the affidavit, the proceeding, the judge, and the parties to the proceeding.