Terminal
Infiniti Feed

Ohio Senate trading accelerates as platforms price Democratic congressional prospects

Ahead of the November 3 midterms, Polymarket priced Sherrod Brown at 73.5 percent in the Ohio Senate race while Kalshi's Ohio market volume jumped to 9.9 million dollars from 2.6 million. The same update put Democrats at 94.5 percent for the House on Polymarket against 93 percent on Kalshi, and at 71.5 percent for the Senate on Polymarket against 70 percent on Kalshi.

Trading in Kalshi’s Ohio Senate market climbed ahead of the November 3 midterms, while Polymarket put Sherrod Brown’s chances in the race at 73.5 percent, according to Cointelegraph via CryptoPanic.

Kalshi’s Ohio market volume rose to 9.9 million dollars from 2.6 million. The update, published Nov 2, 2026 at 12:00 AM ET, did not provide a corresponding Kalshi probability for Brown.

Congressional odds show similar readings

For the House, Polymarket priced Democrats at 94.5 percent, compared with 93 percent on Kalshi, according to the same reporting. Both platforms therefore assigned Democrats a higher probability for the House than for the Senate.

The Senate figures were 71.5 percent on Polymarket and 70 percent on Kalshi. Polymarket’s Democratic probabilities were higher than Kalshi’s for both chambers.

What it means for prediction markets

  • The Ohio figures measure different things: Kalshi’s volume reflects trading activity, while Polymarket’s 73.5 percent figure represents Brown’s market-implied probability.
  • Without a Kalshi price for Brown in the update, the reported figures do not establish whether the platforms disagreed about the Ohio outcome.
  • The congressional prices show broadly similar assessments across the two platforms ahead of November 3, but remain market probabilities rather than election results.
KalshiPolymarketSenateInfiniti MarketsInfiniti Signals

Sources & attribution

Published
  1. Source 1
    CryptoPanic
    Publisher
    The publisher did not list a web address.
    Source URL
    The feed did not publish this story's article address.
  2. Source 2
    Cointelegraph via CryptoPanic
    Publisher
    The publisher did not list a web address.
    Source URL
    The feed did not publish this story's article address.

Full attribution under the Digital Millennium Copyright Act (DMCA), 17 U.S.C. § 512: this article is an original report by Infiniti Intelligence that summarizes the reporting of the publishers named above, links to their original work, and reproduces no protected expression beyond brief factual reference and in-line attribution (“according to CryptoPanic”). All rights in the underlying reporting remain with the publishers listed; nothing here implies endorsement by or affiliation with them. Rights holders may request correction, update or removal through the contact address published at infiniti.w3ai.io.

Related