The Prediction Markets

Republican House seats after the 2026 midterm elections?

Starts in 11 daysKickoff
Traded
$345K
Venues
Polymarket
Prices updated
just now
Share

What the markets expect

Below 190 37.2%

Next is 205-209 at 15.4%. Only Polymarket lists this market, so there is no second price to compare.

Below 190 37.2%205-209 15.4%200-204 13.2%190-194 10.1%195-199 9.2%5 others 14.9%

Odds by venue

Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue. Ages are as of when this page was built.

  • Polymarket
Below 190
37.2%
Polymarket 38.5%(37.2% fair)polled, 44s agoBest Yes 40¢ on Polymarket, $100 pays $250 (2.50x)
Polymarket
Contract
Below 190
Last price
38.5%
Fair, margin removed
37.2%
As of
Polled just now
Buy Yes
40¢
Sell Yes
37¢
$100 on Yes pays
$250 (2.50x)
Volume
$60K
Trade this on Polymarket
205-209
15.4%
Polymarket 16%(15.5% fair)polled, 44s agoBest Yes 17.9¢ on Polymarket, $100 pays $559 (5.59x)
Polymarket
Contract
205-209
Last price
16%
Fair, margin removed
15.5%
As of
Polled just now
Buy Yes
17.9¢
Sell Yes
14.1¢
$100 on Yes pays
$559 (5.59x)
Volume
$47K
Trade this on Polymarket
200-204
13.2%
Polymarket 13.7%polled, 44s agoBest Yes 14.8¢ on Polymarket, $100 pays $676 (6.76x)
Polymarket
Contract
200-204
Last price
13.7%
As of
Polled just now
Buy Yes
14.8¢
Sell Yes
12.5¢
$100 on Yes pays
$676 (6.76x)
Volume
$29K
Trade this on Polymarket
190-194
10.1%
Polymarket 10.5%polled, 44s agoBest Yes 11¢ on Polymarket, $100 pays $909 (9.09x)
Polymarket
Contract
190-194
Last price
10.5%
As of
Polled just now
Buy Yes
11¢
Sell Yes
10¢
$100 on Yes pays
$909 (9.09x)
Volume
$19K
Trade this on Polymarket
195-199
9.2%
Polymarket 9.5%polled, 44s agoBest Yes 10¢ on Polymarket, $100 pays $1,000 (10.0x)
Polymarket
Contract
195-199
Last price
9.5%
As of
Polled just now
Buy Yes
10¢
Sell Yes
9¢
$100 on Yes pays
$1,000 (10.0x)
Volume
$38K
Trade this on Polymarket
210-214
4.6%
Polymarket 4.8%polled, 44s agoBest Yes 7¢ on Polymarket, $100 pays $1,429 (14.3x)
Polymarket
Contract
210-214
Last price
4.8%
As of
Polled just now
Buy Yes
7¢
Sell Yes
2.6¢
$100 on Yes pays
$1,429 (14.3x)
Volume
$19K
Trade this on Polymarket
215-219
3.9%
Polymarket 4%polled, 44s agoBest Yes 6.9¢ on Polymarket, $100 pays $1,449 (14.5x)
Polymarket
Contract
215-219
Last price
4%
As of
Polled just now
Buy Yes
6.9¢
Sell Yes
1.1¢
$100 on Yes pays
$1,449 (14.5x)
Volume
$13K
Trade this on Polymarket
220-224
3.4%
Polymarket 3.5%polled, 44s agoBest Yes 4.4¢ on Polymarket, $100 pays $2,273 (22.7x)
Polymarket
Contract
220-224
Last price
3.5%
As of
Polled just now
Buy Yes
4.4¢
Sell Yes
2.6¢
$100 on Yes pays
$2,273 (22.7x)
Volume
$61K
Trade this on Polymarket
225-229
2.4%
Polymarket 2.5%polled, 44s agoBest Yes 4.2¢ on Polymarket, $100 pays $2,381 (23.8x)
Polymarket
Contract
225-229
Last price
2.5%
As of
Polled just now
Buy Yes
4.2¢
Sell Yes
0.7¢
$100 on Yes pays
$2,381 (23.8x)
Volume
$27K
Trade this on Polymarket
230+
0.6%
Polymarket 0.6%polled, 44s agoBest Yes 1¢ on Polymarket, $100 pays $10,000 (100x)
Polymarket
Contract
230+
Last price
0.6%
As of
Polled just now
Buy Yes
1¢
Sell Yes
0.2¢
$100 on Yes pays
$10,000 (100x)
Volume
$33K
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • Below 190
  • 205-209
  • 200-204

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Top of book

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Best ask
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Depth · top 8 levels

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Recent trades

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

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Buy

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.04 × price × (1 − price) per share (politics rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Republican House seats after the 2026 midterm elections?". Below 190 leads at 37.2%. Next is 205-209 at 15.4%. $345K has traded across 10 outcomes on Polymarket. The market is expected to resolve by Nov 4, 2026.

This market will resolve according to the Republican Party’s seat count in the U.S. House of Representatives as a result of the 2026 United States midterm election scheduled for November 3, 2026. The seat count includes all House elections in the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th Congress. Where a seat is decided by a runoff, the runoff result will determine attribution of that seat. Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation, or vacates their seat, between election day and the formal organization of Congress, the seat is attributed to the party under which the member was elected. House members elected as independents who formally caucus with, or, for newly elected members, who announce their intent to caucus with, the Republican party are included in the count. If the caucus decisions of members of the House elected as independents cannot be determined on the date of the election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party. The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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