Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket Alternative Pick polygram.ink |
1% | 99% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Polymarket Alternative → |
Polymarket polymarket.com |
1% | 99% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Polymarket Alternative → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Polymarket Alternative → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Polymarket Alternative → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Polymarket Alternative → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Polymarket Alternative.
Active sub-markets
| June 30, 2026 | 1% YES | 99% NO |
| December 31 | 0% YES | 100% NO |
Market context
A formal declaration of war by the US Congress against Venezuela would represent a dramatic escalation from the current posture of sanctions, diplomatic isolation, and rhetorical hostility. Since 2017, the US has imposed successive tranches of economic and sectoral sanctions on the Maduro government, frozen assets, and supported opposition figures, yet has stopped short of military action or any legislative war declaration. The last formal congressional war declaration occurred in 1942 against Romania; since then, military engagements have proceeded under Authorizations for the Use of Military Force (AUMFs) or executive authority, a pattern that has held even during far more intensive conflicts.
Historical precedent suggests the 1% implied probability reflects genuine structural barriers. Congress has not issued a war declaration in over eight decades, and doing so requires supermajority political alignment on a measure that triggers immediate constitutional and international legal obligations. Venezuela's military capacity poses minimal direct threat to US territory, reducing the urgency that typically precedes such votes. Recent reporting from Reuters and the Council on Foreign Relations indicates the incoming administration's Venezuela policy remains focused on sanctions tightening and diplomatic pressure rather than military preparation or congressional groundwork for a declaration.
Traders monitoring this market should track congressional statements following any significant Venezuela-related incident—a major humanitarian crisis, alleged attacks on US personnel, or a sudden collapse of the Maduro regime—as these could shift legislative appetite. Polymarket's 1% probability and Kalshi's comparable odds reflect consensus scepticism; Betfair and Smarkets show similar decimal conversions (around 100.0 and above), indicating tight agreement across major platforms on the low likelihood of formal war declaration within the specified window.
Methodology
This page compares Will the US officially declare war on Venezuela by 2025? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Polymarket Alternative, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). Polymarket Alternative routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.
FAQ
- Where can I trade this market with the lowest fees?
- On Polymarket Alternative, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket Alternative is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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