New projection shows stronger Democratic Senate prospects than Kalshi market pricing
PredictionMarketPicks simulated the 2026 Senate election 10,000 times using Kalshi race prices from October 31, producing a median 52 to 48 seat split for Democrats and independents against Republicans. Its tracker shows about 78.2 million contracts traded on the Congress balance-of-power market, with about 61.3 million contracts open.
A simulation of the 2026 Senate election put the probability of Democratic and independent control at 71.4 percent, compared with a 68 percent market price, according to PredictionMarketPicks. The result places the simulation 3.4 percentage points above the market’s assessment.
Simulation and market pricing
PredictionMarketPicks ran 10,000 simulations using Kalshi’s individual Senate race prices from October 31. The median outcome was 52 seats for Democrats and independents and 48 for Republicans.
The comparison highlights a difference between an estimate assembled from race-level prices and the price attached to control of the chamber. The supplied summary does not describe the simulation’s assumptions or how it handles relationships between race outcomes, limiting what can be concluded about the gap.
Trading activity
PredictionMarketPicks’ tracker shows about 78.2 million contracts traded on the Congress balance-of-power market, with about 61.3 million contracts open. Those figures describe activity in the broader balance-of-power market, rather than the simulation itself.
The report was published on Oct 31, 2026, at 10:30 AM ET. Its findings reflect the October 31 race prices used as inputs, not a confirmed election outcome.
What it means for prediction markets
- A measurable pricing gap: The 71.4 percent simulated probability exceeds the 68 percent market price by 3.4 percentage points, but the summary does not establish why.
- Methodology matters: Without details on the simulation’s assumptions, readers cannot determine whether the difference reflects modeling choices or inconsistent pricing across markets.
- Activity is not validation: The reported contract volumes provide context on market participation; they do not establish that either the simulation or the control-market price is more accurate.
Sources & attribution
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