Kalshi and Polymarket Price Democratic Midterm Sweep at 75%

Prediction Markets Favor a Democratic Sweep

Record sums have poured through US midterm contracts this cycle, and the pricing points one way: Democratic control of Congress. Roughly $1.9 billion in election-related contracts had traded across Kalshi and Polymarket as of Monday, the highest volume ever recorded for a midterm election cycle. As of 4:30 p.m. UTC on Tuesday, Kalshi put a Democratic sweep of both chambers at 75%, with Polymarket at 75.5%. House control looked close to settled at 93% and 94.5% respectively, while Senate odds sat at 75% and 75.5%. The volume surge comes with recent cautionary history: nine days before this vote, both platforms favored Flávio Bolsonaro at roughly 80% the day before Luiz Inácio Lula da Silva won Brazil's presidential runoff. Kalshi CEO Tarek Mansour cautioned that “a 5% probability doesn't mean it won't happen.” Markets are already pricing consequences, with Polymarket conditional contracts implying a 35% chance of a US recession by the end of 2027 under a Democratic sweep, against 19% without one.

Bearish Election Posts Hit a Month High

Sentiment among crypto traders has turned sharply negative as ballots are counted. Behavioral analytics platform Santiment recorded its highest count of bearish election posts in a month of tracked social data, and argued in a social post that extreme crowd fear can serve as a useful counter-signal. The dread has a concrete legislative anchor: the CLARITY Act, a bill that would divide supervision of crypto exchanges and futures trading between the U.S. Securities and Exchange Commission (SEC) and the Commodity Futures Trading Commission (CFTC). The Senate blocked the bill 49-50 on September 15, eleven votes short of the 60 needed, and many traders view Republican control as the friendlier path for stalled rules. Bitcoin traded near $77,768 in spot trading on Tuesday, up 0.2% over 24 hours. Santiment's framework holds that defending $76,500 to $77,000 would improve relief-rally odds, a move back above $79,000 would strengthen the case, and a clean break under $76,000 would confirm the fear.

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Fairshake's $30 Million Ohio Fight

Ohio's Senate race shows the stakes most clearly. Defend American Jobs, part of the Fairshake super PAC network, directed 54% of its total spending to the state, with $36.9 million backing Republican Senator Jon Husted and $19.7 million opposing Democrat Sherrod Brown, per the group's official website. Fairshake spent $40 million helping to unseat Brown in 2024, when he chaired the Senate Banking Committee, and opened a $30 million campaign this year against his comeback. Traders still make Brown the favorite at 73% on Polymarket, in line with a final New York Times/Siena poll that had him ahead 49% to 44%; Ohio polls close at 7:30 p.m. ET. A Brown win could hand him the Senate Agriculture Committee chairmanship, which oversees the CFTC. Maine cuts the other way: Republican Senator Susan Collins voted against advancing the CLARITY Act in September, and Kalshi gives Democrat Troy Jackson, rated strongly pro-crypto by Stand With Crypto, a 71% chance of unseating her. In Texas, Kalshi puts Democrat James Talarico at 71% over Republican Ken Paxton, a setback for the Winklevoss-backed Digital Freedom Fund, which spent more than $81,000 supporting Paxton.

A Fear Reading of 26 Before Results

Our own aggregate market data puts the Crypto Fear and Greed Index at 26 out of 100, deep in fear territory, with Bitcoin holding 68.1% of a COINOTAG-tracked market cap of roughly $2.30 trillion. That reading suggests the bearish election positioning described above is largely priced in already rather than waiting on the count. History also argues against over-reading Congress: Bitcoin rallied after the failed CLARITY vote in September, when Federal Reserve rate expectations were the bigger driver, and after the 2018 midterms it sat 46% below its election-day close three months later yet finished the following year 45% higher. Prediction platforms give 81% odds that the Associated Press calls the House by the end of Wednesday; until then, $76,000 remains the level traders watch.