2024 United States Senate election in Ohio
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| Turnout | 69.9% 15.3 pp | ||||||||||||||||
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Moreno: 40–50% 50–60% 60–70% 70–80% 80–90% >90% Brown: 40–50% 50–60% 60–70% 70–80% 80–90% >90% | |||||||||||||||||
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| Elections in Ohio |
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The 2024 United States Senate election in Ohio was held on November 5, 2024, to elect a member of the United States Senate to represent the state of Ohio. Incumbent Democratic Senator Sherrod Brown ran for re-election to a fourth term, but was defeated by Republican nominee Bernie Moreno. Along with Bob Casey Jr. in Pennsylvania and Jon Tester in Montana, Brown was one of three incumbent senators to lose re-election in 2024. Primary elections took place on March 19, 2024.
This race was one of two 2024 U.S. Senate races in which Democratic senators sought re-election in states where Republican Donald Trump won in both the 2016 and 2020 presidential elections (the other being Montana). Brown's re-election was considered essential for Democrats' chances to retain the senate majority in 2024. This was the most expensive U.S. Senate election of 2024, with a record-breaking 483.4 million dollars spent in total.
Although Brown outperformed Kamala Harris in the concurrent presidential election, receiving around 2.6% more of the vote, it was still not enough to win. Moreno defeated Brown by 3.62 percentage points, which was a slightly larger margin than expected. This was Brown's second general election loss of his political career. Brown received about 120,000 more votes than Harris, while Moreno received about 320,000 fewer votes than Trump.
Moreno's campaign was aided by Republican nominee Donald Trump's 11.21% margin of victory in Ohio, helping secure an outright majority for Senate Republicans for the first time since 2021, with a net gain of four seats in the 2024 elections.
Moreno's swearing in on January 3, 2025 gave Republicans control of both of Ohio's U.S. Senate seats for the first time since 2007. As Ohio's other U.S. senator, JD Vance, was elected vice president of the United States, Moreno became Ohio's senior senator upon Vance's resignation.