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PolymarketCloses January 1, 2027

Will the US officially declare war on Iran by...?

The market puts it at 2.5% — a very long shot — on Polymarket, as of Oct 5, 17:23 UTC.

The odds

as of Oct 5, 17:23 UTC
  • Chance of yes 2.5% —
Traded today$1K
Traded in all$7.8M
Yes, 7 daysunch

Yes, the last 7 days

Polymarket price
25%50%75%Sep 27Oct 53%

Sep 28: 2.6% · Sep 29: 2.6% · Sep 30: 2.7% · Oct 1: 2.7% · Oct 2: 2.8% · Oct 3: 3.1% · Oct 4: 3.1% · Oct 5: 2.7%

How it resolves

Polymarket's rule, word for word
This market will resolve to "Yes" if the United States formally declares war on Iran through an act of Congress between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No." To qualify, Congress must pass a formal declaration of war, consistent with its constitutional authority under Article I, Section 8. Authorizations for the use of military force (AUMFs), executive orders, presidential statements, or military actions do not qualify unless accompanied by a formal declaration of war enacted by Congress and signed into law. The resolution source will be a clear consensus of credible reporting.
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