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Midterm contracts span local contests as House control draws heavy trading

OddsChecker catalogues the midterm menu on Kalshi and Polymarket US as of November 1, noting Polymarket alone carries more than 560 markets including governors, ballot measures and local races, while Kalshi's House control market had traded about 171 million dollars.

Prediction-market coverage of the midterms extends beyond congressional control to governors, ballot measures and local races, according to OddsChecker’s November 1 catalogue of offerings on Kalshi and Polymarket US.

Market breadth and trading activity

Polymarket alone lists more than 560 midterm markets, according to OddsChecker. The count captures a broad range of electoral outcomes rather than just the contests that determine control of Congress.

Kalshi’s House control market, meanwhile, had traded about 171 million dollars, according to the outlet. That figure measures trading activity in one contract, distinct from the number of markets available.

A snapshot of the midterm menu

The catalogue provides an as-of-November 1 view of the two platforms’ offerings. Its headline figures describe different dimensions of the market: Polymarket’s range of listed contests and Kalshi’s trading volume on House control.

The supplied summary does not include contract prices or trading volumes for individual gubernatorial, ballot-measure or local-race markets. It therefore offers no basis for assessing their implied probabilities or comparing their activity with the House control contract.

What it means for prediction markets

  • More than 560 Polymarket listings give readers a wider set of electoral outcomes to track, including governors, ballot measures and local races.
  • Kalshi’s roughly 171 million dollars in House control trading establishes activity in that market, not the probability of either party winning.
  • Listing breadth and trading volume are separate measures; the reported figures do not establish which platform has greater overall midterm activity.
KalshiPolymarketMidtermsInfiniti MarketsInfiniti Signals

Sources & attribution

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    OddsCheckeroddschecker.com
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    https://www.oddschecker.com
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