Brown, 73, served 18 years in the Senate before losing to Republican Bernie Moreno in 2024. He now returns to finish the term won in 2022 by JD Vance, which has two years left. Because this was a special election, he must run again in 2028 for a full six-year term. "This victory belongs to all of us. Thank, Ohio," Brown said.

Husted, a former Ohio lieutenant governor, secretary of state and state lawmaker, was appointed to the seat in January 2025 by the governor after Vance became vice president. Before the election, the Cook Political Report rated the race a toss-up, and a polling average had Brown ahead 47.9% to 44.5%. Earlier in the evening, absentee returns from 67 of Ohio's 88 counties showed Brown leading 60% to 37%.

Brown campaigned on fighting for working Ohioans, opposing corporate cronyism and capping prescription drug costs. He criticized Husted for supporting AI data centers, a topic with local weight in a state that ranks fifth nationally for them. He also pointed to Husted's ties to a $60 million bribery scandal involving the utility FirstEnergy and to campaign donations from billionaire Les Wexner, who employed Jeffrey Epstein. Husted countered by portraying Brown as a failed politician whose approach was out of date, and he cited his own role in passing income tax cuts.

The campaign drew heavy money and national surrogates. Ad spending topped $500 million, a record by one tracker's count. Outside groups, including the Senate Leadership Fund, the Trump-backed MAGA Inc. and Elon Musk's America PAC, spent a reported $113.5 million attacking Brown, while $69.5 million went to attacks on Husted. Brown outraised Husted in the third quarter, $23.1 million to $5 million. President Donald Trump visited Ohio several times to campaign for Husted, and at one Youngstown appearance he commented on Husted's physique. Former President Barack Obama also rallied in the state.

A voter poll found about half of voters viewed Brown favorably, against about 4 in 10 for Husted. Brown won about 7 in 10 voters under 30, up from about half in 2024, and about two-thirds of moderates, up from 6 in 10 two years earlier.

Ohio voted the same day for governor, choosing between Republican Vivek Ramaswamy and Democrat Amy Acton. Brown congratulated Acton, who is set to become the next governor.

Ohio has shifted to the right over the past decade, which makes Brown a comeback winner for Democrats there. The Senate stood at 53 Republicans and 47 Democrats going into the election, and Democrats needed a net gain of four seats to take control. The win is viewed as a boost for the party's effort to retake the chamber during the last two years of Trump's term.