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Kalshi midterm activity reaches 260,442,621 contracts across election markets

PredictionMarketsPicks' live Midterms Money Tracker counted 260,442,621 contracts traded across Kalshi's 2026 Senate, House and chamber-control markets, with 14,153,764 contracts traded in the last 24 hours. Open interest stood at 178,520,134 contracts across 100 live races, ranked by Kalshi volume.

Kalshi’s 2026 midterm markets recorded 260,442,621 contracts traded across Senate, House and chamber-control markets, according to PredictionMarketsPicks’ live Midterms Money Tracker.

The update, published Nov 1, 2026 at 10:45 AM ET, put trading over the last 24 hours at 14,153,764 contracts.

Trading activity and outstanding positions

Open interest stood at 178,520,134 contracts, according to PredictionMarketsPicks. The tracker covered 100 live races, ranked by Kalshi volume.

The figures describe trading activity and outstanding positions, rather than election probabilities. The supplied summary does not include individual race prices or a breakdown of volume among Senate, House and chamber-control markets.

What it means for prediction markets

  • The 14,153,764 contracts traded in the last 24 hours provide a recent activity measure alongside the cumulative 260,442,621-contract total.
  • Open interest of 178,520,134 contracts is a separate measure from trading volume; the two should not be treated as interchangeable.
  • Without race-level prices or volume breakdowns, the aggregate figures do not establish which outcomes traders favor or where activity is concentrated.
KalshiSenateMidtermsInfiniti MarketsInfiniti Signals

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