Congress passes Iran war powers resolution by June 30?

Platform comparison

Market context

The real-world event centres on whether the U.S. House and Senate will jointly pass a resolution to restrict military action against Iran before the June 30 deadline, despite the market currently pricing this outcome at 100% YES. This extreme consensus clashes sharply with historical precedents where similar war powers measures failed due to narrow, party-line votes; for instance, Senate attempts to direct withdrawal in recent months collapsed on 6 May and again on 16 June, while the House’s 215–208 approval on 3 June carries limited legal weight and faces veto barriers in a divided chamber[1][3]. Traders should view the current probability as the favourite overplaying its hand, with the underdog scenario of legislative failure offering significant value if Republican support does not shift rapidly in the remaining window.

Key catalysts include the Senate’s upcoming procedural vote on the war powers resolution it advanced last month, alongside ongoing diplomatic talks that signal a potential de-escalation path, which further reduces urgency for legislative action[1][4]. A recent report from the American Legion notes that while the House succeeded in halting the war for the first time, the Senate’s next vote remains critical and could be the final hurdle before the deadline[3]. Contrarian angles suggest watching for administration signals of de-escalation or a last-minute bipartisan breakthrough, though such a shift would require rapid Republican realignment amid a short timeframe, making the 100% YES price appear inflated relative to the actual likelihood of passage[1]. The value spot lies in betting against the consensus, as the historical pattern of failure and procedural hurdles suggests the market is mispricing the risk of a "No" resolution.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Congress passes Iran war powers resolution by June 30? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Who Will Win 2026 — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

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.

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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.