Kalshi’s Senate contracts can settle on different answers to the same election
Summary
A four-contract Kalshi package combining a YES on Democratic Senate control with NO positions on Democratic seat totals of 51, 52 and above 52 cost $3.02 at Oct. 28 asks, for a $3 payout if the control and seat outcomes align. The apparent probability gap between the control market and normalized seat-count markets does not create a tradable profit at those prices. Settlement dates and rules differ, so vacancies or caucus changes could leave the package exposed; displayed liquidity, fees, execution and collateral requirements add further uncertainty. No trades were executed. Separate Talos modeling found occasional positive results for a nine-leg package under specific execution assumptions, but those were not realized trades.
