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How many House seats will Republicans hold after the Midterms?

Live prices from Kalshi, ordered by what the market thinks. These are raw ask prices, what it actually costs to take the position, margin included.

OutcomeKalshi
Below 193 24¢
198-202 17¢
203-207 16¢
208-212 14¢
193-197 13¢
213-217 9.3¢
218-222 5.8¢
223-227 5.2¢
Above 237 2.4¢
228-232 1.9¢
233-237 1.3¢

Only outcomes with a live two-sided quote are shown. No Polymarket equivalent was matched with enough confidence to publish, so this page is Kalshi only. Prices as of Thu, 17 Sep 2026 07:04:34 UTC.

The overround on this market

Add up what it costs to back every outcome here and Kalshi's board comes to 109.9%. A fair book sums to 100. The excess is the house's cut, paid by whoever trades, and it is the reason the same opinion costs different amounts in different places. That number is what this site is named after.

Your call

The market says 24%. It got there by making everyone who disagreed put money behind it. You do not have to, so this is the cheap version of the same question, and the interesting number is how far the two drift apart.

24%

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The record

What this market has cost every day since 22 December 2025, taken from the exchange's own published history. The line is the mid price, halfway between what a buyer would pay and a seller would take.

0 25 50 75 100 DecJanFebMarAprMayJunJulAugSept Below 193 23.5 198-202 16.5 203-207 15.5

Over this window 198-202 went from 11.5 to 16.5, a move of 5 points toward happening.

The other 1 contract in this field is left off the chart rather than drawn in a colour nobody could tell apart; it is all in the table above. Kalshi removes a contract from its interface once it settles and Polymarket buries closed events, so this page is the copy that stays put. We also record our own snapshot once a day, independently, because a history published by the house is worth checking against one kept by somebody with no position in it.

See this on Kalshi

What settles this

Settlement source
United States Congress
Contract terms
Kalshi product certification (PDF)
Closes
Mon, 01 Feb 2027 15:00:00 UTC
Resolution, for the Below 193 contract
If the Republican Party has below 193 House seats on Feb 1, 2027, then the market resolves to Yes.
Ticker
KXRHOUSESEATS-27

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