The Prediction Markets

Will Republicans win any Senate or Governor's Election in a Biden-Trump state?

Closes
Nov 4, 2026, in 12 days
Traded
$10K
Venues
Polymarket
Prices updated
5 min ago
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What the markets expect

Yes 69.5%

Only Polymarket lists this market, so there is no second price to compare.

Yes 69.5%No 30.5%

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, the oldest 5 min ago. Ages are as of when this page was built.

  • Polymarket
Yes
69.5%
Polymarket 69.5%polled, 5 min agoBest Yes 71¢ on Polymarket, $100 pays $141 (1.41x)
Polymarket
Contract
Yes
Last price
69.5%
As of
Polled 5 min ago
Buy Yes
71¢
Sell Yes
68¢
$100 on Yes pays
$141 (1.41x)
Volume
$10K
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle

How the odds have moved

The leading outcome on both venues, with the consensus between them. Hover for exact values.

  • Yes

Order books

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

Polymarket

Open on Polymarket ↗

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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Cover Yes and No across venues

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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 "Will Republicans win any Senate or Governor's Election in a Biden-Trump state?". Yes leads at 69.5%. $10K has traded across 1 outcome on Polymarket. The market is expected to resolve by Nov 4, 2026.

This market will resolve to "Yes" if, in the 2026 midterm elections, Republicans win a gubernatorial or US Senate election in any state that was won by Donald Trump in the 2024 US presidential election but was not won by Donald Trump in the 2020 election. Otherwise, this market will resolve to "No". All Gubernatorial elections, and all regular and special Senate elections that determine representation in the upcoming 120th Congress, and are scheduled to take place in November 2026 as of October 31, 2026 are included. Runoffs for qualifying elections will determine attribution of the winner, even if they take place after November 2026. Vacant offices for which no election or special election to fill the office is scheduled to take place in November 2026 as of October 31, 2026 will not be considered. Seats are attributed to the party under which the member or governor was elected. If a member-elect or governor changes party affiliation, or vacates their office, after election day, the seat is attributed to the party under which the person was elected. Senate members elected as independents who formally caucus with, or, for newly elected members, who announce their intent to caucus with, a party will be attributed to that party. If the caucus decisions of members of the Senate 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 any party. For purposes of this market, the relevant states won by Donald Trump in 2024 but not in 2020 are Wisconsin, Michigan, Pennsylvania, Georgia, Nevada, and Arizona. No other states will be considered for purposes of this market, and no disputes of any state result from 2020 or 2024 will be considered relevant. 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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