Kalshi Senate contracts settle on different answers to same election
Current overview (not historical)
Kalshi's Senate control market and seats market quoted different probabilities for a Democratic victory on October 28, with control at 64.5% and seats at 62.1%, a 2.4 percentage point gap. The discrepancy stems from differing settlement conditions: the control market accelerates settlement when at least four media outlets call the winner with no contradictory claims, while the seats market uses the February 1 Senate composition and counts votes by party unity. Buying four contracts to hedge costs 3.02 dollars (before fees) and pays out 3 dollars only if both control and seat thresholds are met; if Democrats win control but fall short of 51 seats, the four contracts pay a total of 4 dollars.
Written with AI from the reporting · updated 10/29/2026
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- 1Unclassified fact stationOct 28, 00:00recorded Oct 30, 06:19single sourcerevised
Kalshi Senate contracts settle on different answers to same
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- Subject：
- kalshi
- Action：
- Senate markets showed different Democratic odds
- Object：
- Senate control and seat-count outcomes alignment
- Occurred (fact side)：
- Oct 28, 00:00
- Published (valid side)：
- Oct 30, 06:00
- First seen (known side)：
- Oct 30, 06:19
Fact stationSingle source · one-sided claimRevisedCopy may have been revised later; time replay is bounded. Layer labels group reading only, not causation between layers.
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- CryptoSlateRelated fact: single sourceSource report revisedKalshi Senate markets show price discrepancy between control and seat-count odds on Oct. 28
Report first recorded Oct 30, 06:19
On Oct. 28, Kalshi's Senate control market had a 64.5% midpoint probability for Democratic control, while normalized estimates from seat-count markets put the chance of 51 or more Democratic seats at about 62.1%. A $3.02 four-contract hedge, combining a YES on Democratic control with NOs on exactly 51, exactly 52, and above 52 seats, would pay $3 if outcomes aligned, leaving a two-cent loss before fees. The discrepancy arises from different settlement provisions and timing rules for control versus seat composition.
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Event activity trend
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- Comparable peak
- 10Oct 30, 07:00
- 24h change
- -50%
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