Kalshi
PolymarketOhio Senate 2026: Sherrod Brown Won the Seat Back, as the Market Had Leaned Before the Forecasters Did
Sherrod Brown won Ohio's 2026 U.S. Senate special election. The Democrat defeated Jon Husted, the Republican appointed to the seat in January 2025, according to a race call by the Associated Press that NPR reported at 11:10 p.m. on November 3, 2026, and NBC News also projected Brown the winner. With every Election Day precinct reporting, the Ohio Secretary of State's unofficial results, read at 9:52 a.m. Eastern on November 5, 2026, gave Brown 2,301,042 votes to Husted's 2,077,748, a margin of 223,294, with Libertarian William Redpath at 128,272 and Greg Levy at 94,509. Going in, the venues had leaned the same way without calling it: on November 2, 2026, Kalshi had the Democratic contract at 70% against Polymarket's 72%, and Polymarket had the Republican contract at 28%, which left Husted better than a one-in-four chance. On November 4, 2026 Kalshi and Polymarket both quoted the Democratic contract at 100%. The count is unofficial until the Secretary of State certifies it after the county boards' official canvass.
The closing board shows what the price says about Ohio's 2026 Senate special election: Sherrod Brown, the Democratic nominee, was more likely than not to take the seat back from Jon Husted, the Republican appointed to it in January 2025, because the market treats the fall polling as more informative than the state's recent presidential record. That was an Ohio question in the plainest sense: the seat on the November 3, 2026 ballot was the unexpired term ending January 3, 2029, and Ohio voters alone chose who fills it. The forecasters split, with Sabato's Crystal Ball and Inside Elections on the Democratic side of even and Cook Political Report still at toss-up, and the market went further than either camp. The live board above carries the final prices from Kalshi and Polymarket.
Why the Ohio Senate Price Sat Above Even
Start with how the seat came to be on the ballot. Governor Mike DeWine appointed Husted, then lieutenant governor, after JD Vance resigned the seat to become vice president; Wikidata records Husted as a United States senator from January 21, 2025, and the county boards of elections list the office on the November ballot as the U.S. Senate seat for the unexpired term ending January 3, 2029. Husted ran unopposed for the Republican nomination and drew 736,413 votes. Brown won the Democratic primary over Ron Kincaid with 712,106 votes, 89.4% of the Democratic vote, by the official canvass. Neither result says much about November by itself, because an unopposed primary gives a voter little reason to turn out, but it does settle who the contract's two names are: both sides of this board track a named nominee rather than a party in the abstract.
The market's lean rests on the polling, and the polling has run Brown's way since the summer without ever running far. A Siena College poll taken June 15 to 28, 2026 for The New York Times had Husted ahead 50 to 47 among likely voters; by late September the same pollster had Brown ahead 49 to 46. The final stretch kept the same shape. Survey 160, in the field October 27 to November 1, 2026, had Brown ahead by five points. Research Co., polling 450 likely voters October 30 to November 1, had him ahead 49 to 48 among decided voters. The Suffolk University and USA TODAY Network Ohio poll of October 21 to 26 had him ahead 47 to 44, the same margin as Suffolk's September survey, and Marist's poll of October 15 to 18 had him ahead 48 to 44 among likely voters and 51 to 42 among registered voters. Every one of those leads sits near or inside its own margin of error, which is why half the forecasters stop at toss-up; what the market is pricing is that the leads keep pointing the same way.
On October 20, 2026, by the earlier reads in the market's price history, Polymarket had the Democratic contract, which Kalshi's board labels with Brown's name, at 64%, a point under Kalshi's 65%, and both venues had the Republican side at 36%. On November 2, 2026, Kalshi had the Democratic contract at 70% against Polymarket's 72%, and Polymarket had the Republican contract at 28% against Kalshi's 31%. Read plainly, the venues had moved Brown from a little under two chances in three to a little over, which was still a lean rather than a call: it left better than a one-in-four path for an appointed incumbent in a state that voted for Donald Trump in 2016, 2020 and 2024.
The forecasters moved in the same direction in the final week, and not together. Per the ratings table on the race's Wikipedia page, Inside Elections moved to Tilt Democratic on October 29, 2026, and Sabato's Crystal Ball, Fox News and the Silver Bulletin model all showed Lean Democratic by November 1 or 2, while Cook Political Report kept the race at Toss-up on October 30 and Decision Desk HQ and NBC News held it there on November 1. The structure of the race, then, was a market that agreed with every forecaster about the direction and with none of them about the distance: the ones that leaned called Brown a slight favorite, and the board priced him at better than two in three.
The money is not level, and it no longer points the way it did in September. The Federal Election Commission's candidate pages show Brown's authorized committees raising about $68.4M and spending about $64.0M from August 11, 2025 through October 14, 2026, and ending that period with about $4.45M in cash on hand. Husted's committees reported about $19.9M raised, $15.7M spent and $4.24M on hand for January 1, 2025 through October 22, 2026. Brown had outspent Husted about four to one and still led only narrowly in the polls, so the price leaned on the polls and the national environment they measured rather than on the spending gap.
The ballot was not only two names. The Lake County Board of Elections candidate list, updated October 15, 2026, carries Brown, Husted, William B. Redpath for the Libertarians and Greg Levy as an other-party candidate, plus three write-in candidates. Their share mattered at the margin: in the Trafalgar Group poll taken October 31 to November 1, 2026, Levy had 3 and Redpath 1, against a Brown lead of two points. In the unofficial count the two drew 222,781 votes between them, just short of Brown's margin over Husted.
The Case Against the Ohio Senate Read
The strongest case against the market before the vote was that the late polls that were not Brown's best looked like a coin flip. Echelon Insights had the race tied at 47 in a poll taken October 16 to 23, 2026, Rasmussen Reports had Husted ahead 49 to 47 on October 12 to 14, Research Co.'s final survey had Brown ahead by a single point among decided voters, and the co/efficient poll taken October 5 to 6 had Husted ahead 44 to 43 on the full ballot. A reader who holds the other view would put it this way: the larger Brown leads come from registered-voter samples or sit at the edge of their margins, the averages put the race within about three points, and a state whose presidential vote has gone Republican three times running does not need to like an appointed senator to keep him. On that reading the market had priced a race inside three points as a clear lean, and the honest price was nearer the toss-up that Cook and Decision Desk HQ still printed. The count did not bear that out: Brown's unofficial margin of about 4.9 points was close to Survey 160's five and wider than the Suffolk, Marist and Research Co. leads. What the case still gets right is that a seven-in-ten price left Husted a real chance, and one result cannot show the price was well calibrated, only that the favorite won.
There is a structural version of the same objection. Brown had won statewide three times before, and he also lost the 2024 race to Bernie Moreno by a little over three points, which showed a ceiling as clearly as a floor.
What Changes the Ohio Senate Read
The read would be wrong now only if the official count reversed the unofficial one, and a margin of 223,294 votes leaves that a long way off. The dated, observable steps still ahead:
• Outstanding ballots: the Secretary of State's ballots-cast summary, read November 5, 2026, listed 98,369 outstanding provisional ballots and 3,779 outstanding overseas and military absentee ballots statewide, together fewer than half of Brown's margin. Overseas and military ballots sent by mail have up to four days after Election Day to arrive.
• The canvass: the Secretary of State says the official canvass is completed about three weeks after the election and that results are unofficial until it certifies them; no certification date is published on the results page.
• A recount: Ohio Revised Code 3515.011 orders an automatic recount in a statewide race only when the margin is under one-fourth of one percent of the total vote, and the unofficial margin is about 4.9 points.
• Settlement: Polymarket's rule asks for calls from the Associated Press, Fox News and NBC; Kalshi pays on the party of the senator sworn in from the special election, lists an expected settlement of December 16, 2026, and allows accelerated determination on a consensus media projection.
When the Ohio Senate Market Resolves
The two venues settle on different events, and the difference matters for anyone reading both books. Polymarket resolves on the winner of the special election once the Associated Press, Fox News and NBC have all called the race for the same candidate, and on the official certification if they have not. Kalshi resolves Yes on its Democratic contract if a representative of the Democratic party is sworn in as a Senator of Ohio "pursuant to the Class III (special election) held on November 3, 2026", lists an expected settlement of December 16, 2026, and is eligible for accelerated determination once a consensus of media organizations projects the winner. The winner serves the rest of the Class III term, which ends January 3, 2029, so the special-election winner takes the seat once the result is certified rather than at the start of a new term; each contract's own rules govern its settlement.
Related Ohio Senate and Election Markets
The Senate race shared a ballot with the Ohio governor's race, where the same polls tested Amy Acton against Vivek Ramaswamy and the venues leaned further toward the Democrat than they did here. Down the ballot, Sabato's Crystal Ball, in its House ratings updated October 30, 2026, had rated the Ohio 9th District and the Ohio 7th District as toss-ups and the Ohio 15th District and the Ohio 10th District as Leans Republican. Each district page now carries its own count, every statewide and district board is gathered on the elections hub, and the wider coverage sits under politics.
