2018 United States Senate election in Ohio
November 6, 2018
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| Turnout | 54.65% 9.95pp | ||||||||||||||||
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Brown: 40–50% 50–60% 60–70% 70–80% 80–90% >90% Renacci: 40–50% 50–60% 60–70% 70–80% 80–90% >90% Tie: 50% No votes | |||||||||||||||||
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| Elections in Ohio |
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The 2018 United States Senate election in Ohio took place on November 6, 2018. The candidate filing deadline was February 7, 2018; the primary election was held on May 8, 2018. Incumbent Senator Sherrod Brown—the only remaining elected Democratic statewide officeholder in Ohio at the time of the election—won his bid for a third term, defeating Republican U.S. Representative Jim Renacci by a 6.84% margin in the general election, larger than the 6% margin in the election six years earlier. That was despite Republicans winning all statewide executive offices on the same ballot, and was one of ten Democratic-held Senate seats up for election in a state won by Donald Trump in the 2016 presidential election. Renacci conceded defeat on November 7, 2018.
With Republican Mike DeWine winning the concurrent gubernatorial election, this was the first time since 1974 that Ohio simultaneously voted for a gubernatorial nominee and a U.S. Senate nominee of opposite parties. As of 2026, this is the last time the Democratic Party won a partisan statewide race in Ohio.