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County results
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The 1863 Ohio gubernatorial election was held on October 13, 1863. National Union nominee John Brough defeated Democratic nominee Clement Vallandigham with 60.61% of the vote. The campaign was dominated by Vallandingham's May 5 arrest, conviction, and deportation for a speech critical of President Abraham Lincoln and the conduct of the American Civil War. He was nominated in absentia by the Democratic Party.
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| National Union | John Brough | 288,856 | 60.61% | ||
| Democratic | Clement Vallandigham | 187,728 | 39.39% | ||
| Majority | 101,128 | ||||
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| National Union hold | Swing | ||||
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