1990 Ohio State Auditor election
Open-knowledge reference entry

The 1990 Ohio State Auditor election was held on November 6, 1990, to elect the Ohio State Auditor. Primaries were held on May 8, 1990. Democratic incumbent Ohio State Auditor Thomas E. Ferguson won re-election to a fifth term in office, defeating Republican Ohio State House Representative Jim Petro by five percentage points.
As of 2026, this is the last time Democrats have won the office of Ohio State Auditor.
Democratic primary
Candidates
Thomas E. Ferguson, incumbent Ohio State Auditor (1975–1995)
Campaign
Ferguson won renomination unopposed.
Results
Republican primary
Candidates
Jim Petro, Ohio State House Representative (1987–1990) (1981–1984)
Campaign
Petro won the Republican nomination without opposition.
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