Trade: CO-05 House Election Winner
Resolution criteria on PolyGram: This market will resolve according to the party of the candidate who wins the CO-05 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 4, 2026. A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are 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
- $8K
- Total Volume
- $5K
- 24h Volume
- $9
- Open Interest
- $1K
Market outcomes
| A | — | |
| C | — | |
| Democratic Party | 38% YES | 63% NO |
| D | — | |
| Other | — | |
| B | — | |
| Republican Party | 61% YES | 39% NO |
| E | — | |
Market context
Colorado's 5th congressional district will elect a representative to the U.S. House in the 2026 midterm elections on 4 November. The seat is currently held by Republican Jeff Caulkins, who won the 2024 general election with 56% of the vote in a district that has leaned Republican in recent cycles. The market will resolve based on the party affiliation of the winning candidate, with outcomes limited to Democratic or Republican parties unless an independent candidate's affiliation can be otherwise identified.
Historically, CO-05 has been a competitive but Republican-leaning seat. The district voted for Donald Trump by approximately 13 percentage points in 2020 and 2024, suggesting structural Republican advantages, though midterm dynamics often differ from presidential elections. Comparable districts with similar partisan lean have seen the incumbent party retain seats in roughly 85% of cases during midterm cycles, though this varies significantly based on national political environment and local candidate quality.
Traders should monitor candidate announcements from both parties, expected throughout 2025 and into early 2026, as well as any shifts in national political momentum ahead of the election. Primary contests in Colorado typically occur in June, providing clarity on general election matchups by summer 2026. Redistricting remains settled following the 2020 census, so district boundaries will not change before this election. Polling data, fundraising reports, and any significant local issues affecting the district will inform market pricing as the election approaches.
Wikipedia Context
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Cory in the HouseCory in the House is an American television sitcom which aired on the Disney Channel from January 12, 2007, to September 12, 2008, and was a spin-off from the Disney Channel series That's So Raven. The show focuses on Cory Baxter, who moves from San Francisco, California, to Washington, D.C. with his father, Victor Baxter, who gets a new job as the White Hou
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Coalhouse FortCoalhouse Fort is an artillery fort in the eastern English county of Essex. It was built in the 1860s to guard the lower Thames from seaborne attack. It stands at Coalhouse Point on the north bank of the river, at a location near East Tilbury which was vulnerable to raiders and invaders. It was the last in a series of fortifications dating back to the 15th c
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Cory in the House (video game)Cory in the House is a 2008 adventure video game developed by Handheld Games and published by Disney Interactive Studios for the Nintendo DS. Based on the Disney Channel television series of the same name, its plot follows Cory Baxter and his friends as they attempt to thwart a toymaker's plans to hypnotize the population of Washington D.C. using bobbleheads
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CourthouseA courthouse or court house is a structure which houses judicial functions for a governmental entity such as a state, region, province, county, prefecture, regency, or similar governmental unit. A courthouse is home to one or more courtrooms, the enclosed space in which a judge presides over a court, and one or more chambers, the private offices of judges. L
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 "CO-05 House Election Winner" 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?
$5K in lifetime turnover and $8K of resting liquidity puts this market in the below the median by volume for politics contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
Last 24 hours alone saw $9 in turnover, consistent with the market's lifetime daily-average pace.
The market has been open for 3 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 "CO-05 House Election Winner"?
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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