Trade: Oregon Senate Election Winner
Resolution criteria on PolyGram: This market will resolve according to the winner of the 2026 midterm Oregon U.S. Senate election, inclusive of any run-offs. A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. The resolution source for this market is the Associated Press, Fox News, and NBC.
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
- $7K
- Total Volume
- $4K
- 24h Volume
- —
- Open Interest
- $1K
Market outcomes
| Republican | 7% YES | 94% NO |
| Person B | — | |
| Person D | — | |
| Person F | — | |
| Person H | — | |
| Person J | — | |
| Democrat | 93% YES | 8% NO |
| Person A | — | |
Market context
The 2026 midterm election will determine Oregon's U.S. Senate seat, currently held by Democrat Ron Wyden. The 7% implied probability on Polymarket's order book reflects strong Democratic lean in a state where the party has dominated statewide elections for two decades. Oregon has voted Democratic in every presidential election since 2008 and elected Democratic senators consistently since 1996. The current probability suggests traders assess Republican chances as marginal, though not impossible given the unpredictable nature of midterm cycles and potential shifts in national political momentum by 2026.
Historical precedent offers limited direct comparison. Oregon's last competitive Senate race was 2014, when Democrat Jeff Merkley won re-election with 56% against Republican Monica Wehby in a stronger Republican environment nationally. The 2020 cycle saw Wyden win with 57% despite a well-funded Republican challenger. Midterm dynamics typically differ from presidential cycles, and national headwinds can affect even traditionally safe seats, though Oregon's structural Democratic advantage remains substantial.
Key catalysts include candidate announcements, likely occurring through 2025 and into early 2026. The Republican nominee's profile—whether a establishment figure or outsider candidate—will influence market pricing. National economic conditions, particularly inflation and employment data closer to November 2026, historically shape midterm outcomes. Any significant shifts in Oregon's demographic composition or unexpected candidate scandals could move probabilities, though the state's electoral history suggests Democratic resilience remains the baseline expectation.
Wikipedia Context
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2008 Oregon legislative electionElections for the 75th Oregon Legislative Assembly took place in 2008. The Republican and Democratic primary elections were on May 20, 2008, and the general election was held on November 4, 2008. Fifteen of the Oregon State Senate's thirty seats were up for election, as were all 60 seats of the Oregon House of Representatives.
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2012 Oregon elections
On November 6, 2012, the U.S. state of Oregon held statewide general elections for four statewide offices, both houses of the Oregon Legislative Assembly, and several state ballot measures.
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2016 Oregon elections
A general election was held in the U.S. state of Oregon on November 8, 2016. Primary elections were held on May 17, 2016.
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2010 Oregon elections
General elections were held in Oregon on November 2, 2010. Primary elections took place on May 18, 2010.
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 "Oregon Senate Election Winner" are the same as any other PolyGram 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?
$4K in lifetime turnover and $7K of resting liquidity puts this market in the below the median by volume for midterms contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
The market has been open for 7 months — long enough that the order book is mature and price is well-anchored to fundamentals.
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 "Oregon Senate 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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