Where does this number come from?

It's the live price of the Kalshi event contract, which trades between 1 and 99 cents. A price of 60 cents implies a 60% chance. ContractTax reads the public market price and adds price history and context.

Live odds / Politics

Will Republicans hold at least 218 House seats after the 2028 election?

At least 218

30%

implied chance of YES

Price history builds as our scanner records this market. Check back soon for the path.

This is a live Kalshi event contract. The price, 30 cents, is the market’s implied probability of YES. Whether that number is well-calibrated is its own question: our Truth Machine measures how often markets at each price level actually settle YES. Confirm live prices on Kalshi before trading.

Priced about right

KALSHI CHARGES

35¢

MARKETS LIKE THIS SETTLED AT

35¢

Contracts like this one have settled YES 35.1% of the time against a 35c price, which is close enough to fair that the 2c fee eats whatever is left. Based on 3,423 settled markets across all categories in the 30-39c band (we do not yet hold enough politics history to price this by category, so this is the market-wide curve and is weaker evidence).

This is what this kind of contract has been worth, not a forecast for this one: a band average does not know what is happening in the news. See the Fair Value Board for every market scored this way, or the politics curve it came from.

What history says about this price

Across our settled record, markets priced near 30–39¢ have gone on to settle YES 35% of the time (n=3,423). The price implies 30%, so historically this band has come in about 5 points higher than the sticker. That is history, not a forecast for this specific market. See the Truth Machine for the full curve.

See the full field for this event →

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Odds reflect the live Kalshi market and move continuously. Educational only, not financial advice. Not affiliated with Kalshi.