Trade: Republican House seats after the 2026 midterm elections?
Resolution criteria on PolyGram: The 2026 midterm elections are scheduled to be held on November 3, 2026. This market will resolve according to the number of seats held by the Republican Party in the US House of Representatives as a result of the 2026 midterm elections. This market will resolve based on the results of all US House of Representatives elections, including special elections, that are scheduled to occur in November 2026 as of October 31, 2026. If a required runoff for any such election could change the market’s outcome, the market will remain open until that runoff is conclusively called by this market’s resolution sources.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
- Liquidity
- $156K
- Total Volume
- $228K
- 24h Volume
- $819
- Open Interest
- $12K
Market outcomes
| Below 190 | 25% YES | 75% NO |
| 195-199 | 12% YES | 88% NO |
| 205-209 | 9% YES | 91% NO |
| 215-219 | 13% YES | 87% NO |
| 225-229 | 2% YES | 98% NO |
| 190-194 | 13% YES | 87% NO |
| 200-204 | 12% YES | 88% NO |
| 210-214 | 10% YES | 90% NO |
Market context
The 2026 US House midterm elections will determine partisan control of the chamber for the 2027–2029 congressional term. Republicans currently hold 222 seats (as of late 2024), meaning they would need to retain at least 218 seats to maintain majority control. The 26% implied probability on Polymarket's order book reflects expectations that Republicans will fall below this threshold, though the crowd currently assigns a three-in-four chance they hold or gain seats. Settlement depends on all November 2026 House races plus any runoffs conclusively called by early November 2026.
Historical midterm patterns suggest the party holding the presidency typically loses House seats. The sitting president's party lost an average of 23 seats in midterms since 1946, though variance is substantial—ranging from a 49-seat loss in 1974 to a 5-seat gain in 2002. If a Democrat occupies the White House in 2026, historical precedent would favour Republican seat losses, yet the current 26% YES probability suggests traders are pricing in either stronger-than-average Republican resilience or uncertainty about baseline conditions.
Key variables shaping the market include redistricting effects from the 2020 census (now settled), demographic shifts in swing districts, and economic conditions heading into autumn 2026. Fundraising totals and candidate recruitment announcements from both parties will provide early signals; the Federal Election Commission publishes quarterly filings. Polling aggregates in competitive districts will tighten substantially from summer 2026 onwards, offering traders concrete data to reassess the probability as election day approaches.
Wikipedia Context
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Party leaders of the United States House of RepresentativesParty leaders of the United States House of Representatives, also known as floor leaders, are congresspeople who coordinate legislative initiatives and serve as the chief spokespersons for their parties on the House floor. These leaders are elected every two years in secret balloting of their party caucuses or conferences: the House Democratic Caucus and the
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House Republican ConferenceThe House Republican Conference is the party caucus for Republicans in the United States House of Representatives. It hosts meetings, and is the primary forum for communicating the party's message to members. The conference produces a daily publication of political analysis under the title Legislative Digest.
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The Republican Noise MachineThe Republican Noise Machine: Right-Wing Media and How It Corrupts Democracy is a 2004 book written by David Brock which chronicles how the American right wing was able to build its media infrastructure, and the tactics used by right-wing groups to pressure the media and spread misinformation to the public. The book was the prelude to Brock's launching of hi
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Theodore RooseveltTheodore Roosevelt Jr. was the 26th president of the United States, serving from 1901 to 1909. Previously serving six months as vice president under William McKinley, Roosevelt became president after McKinley's assassination in 1901. He was 42 years old upon his first inauguration, making him the youngest person to hold the office.
How this market resolves
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a two-hour dispute window opens, and if no one stakes a counter-claim the payout is final. Contested outcomes escalate to UMA token-holder voting. Payouts clear in USDC to the winning side.
How to trade this market step by step
The mechanics for trading "Republican House seats after the 2026 midterm elections?" are the same as any other PolyGram political event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
- Sign in on polygram.ink with your email — no full KYC under $1,500 lifetime trading volume.
- Deposit USDC on Polygon (lowest fees, ~$0.01 per transaction) or Ethereum. Funds credit after 12 confirmations.
- Pick a side. Buy YES if you believe the event will happen; buy NO if you think it won't. The current YES price reflects the market's collective probability.
- Size your position. If you stake 100 USDC at 50% YES, you'll receive shares that pay $200 if YES resolves true — a 100% gross return. If NO resolves, your shares are worth $0.
- Set risk controls (optional). Stop-loss, take-profit, and limit-order types all supported. Use the trade ticket's slippage box to cap your maximum entry price.
- Wait for resolution. When the event resolves on-chain via the UMA optimistic oracle, the winning side settles to 100¢ automatically and USDC hits your balance within seconds. Withdrawable to any wallet you control.
How active is this market?
$228K in lifetime turnover and $156K of resting liquidity puts this market in the above the median by volume for politics contracts on PolyGram. Order-book depth is exceptional — among the deepest order books in the category.
Last 24 hours alone saw $819 in turnover, consistent with the market's lifetime daily-average pace.
The market has been open for 5 months — the price has had time to stabilise as new information arrived.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
Key terms
- YES / NO share
- A binary outcome token that pays $1.00 if the underlying claim resolves true (YES) or false (NO), and $0 otherwise. The market price between 0¢ and 100¢ is the implied probability.
- CLOB
- Central limit order book. The matching engine that pairs YES buyers with NO buyers (effectively the same trade). Polymarket's CLOB on Polygon executes trades on-chain via the conditional-tokens framework.
- Liquidity
- USDC capital sitting in resting limit orders inside the order book. Deeper liquidity means smaller slippage on large trades and a tighter bid-ask spread.
- UMA optimistic oracle
- The on-chain dispute system that settles each Polymarket market. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution.
- Slippage
- The difference between the displayed mid-price and your fill price. Affects market orders most; limit orders avoid slippage but may take time to fill.
- Conditional token
- ERC-1155 outcome share issued by Gnosis Conditional Tokens on Polygon. The token type that resolves to $1.00 or $0.00 at settlement.
Frequently asked questions
How does this market resolve?
Resolution is handled by the UMA optimistic oracle on Polygon. A proposer submits the outcome, a 2-hour dispute window opens, and if uncontested the payout is final. Contested outcomes escalate to UMA token holders.
When does this market close?
This prediction market is scheduled to close on 3 November 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
How can I trade on "Republican House seats after the 2026 midterm elections?"?
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
What happens when the market resolves?
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Risk and regulatory note
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
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