Tumey v. Ohio, 273 U.S. 510 (1927), is a US Supreme Court case, concerning the due process of judicial disqualification.

[1] The court struck down an Ohio law that financially rewarded public officials for successfully prosecuting cases related to Prohibition.

[4] The mayor of the village of North College Hill, Ohio received $12 for every defendant convicted before him.

Ed Tumey was convicted before the mayor of unlawfully possessing intoxicating liquor.

The court held that Tumey's conviction violated the Fourteenth Amendment, reasoning that it "deprives a defendant in a criminal case of due process of law to subject his liberty or property to the judgment of a court, the judge of which has a direct, personal, substantial pecuniary interest in reaching a conclusion against him in his case.