The 1970 Ohio lieutenant gubernatorial election was held on November 3, 1970, to elect the Lieutenant Governor of Ohio. Republican incumbent John William Brown defeated Democratic challenger, Ohio State Senator and Minority Leader of the Ohio Senate Anthony O. Calabrese, with 52.62% of the vote.

Republican primary Candidates John William Brown, incumbent Lieutenant Governor of Ohio (1963–1975), (1953–1957) Campaign The Republican primary was held on May 5, 1970. Brown won renomination without opposition. Results

Democratic primary Candidates Anthony O. Calabrese, Ohio State Senator (1956–1970), and Minority Leader of the Ohio Senate (1969–1975) A. William Sweeney, lawyer Ray T. Miller Jr. James D. Nolan John J. Gill Robert E. Hagan Perry Mason Campaign The Democratic primary was held on May 5, 1970. Calabrese won a crowded primary with 28.69% of the vote. Results

General election Candidates John William Brown, incumbent Lieutenant Governor of Ohio (1963–1975), (1953–1957) (Republican) Anthony O. Calabrese, Ohio State Senator (1956–1970), and Minority Leader of the Ohio Senate (1969–1975) (Democratic) Herman Kirsch (Write-in) Results

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