SCOTUS bars counting mail ballots after election day?

This market will resolve to “Yes” if the United States Supreme Court, in Watson v. Republican National Committee, rules that the federal election-day statutes preempt a state law that allows ballots cast by federal Election Day to be received and counted after election day, by August 1, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”. This market will resolve based on the Supreme Court’s decision in this case. Other related cases or legislation will not affect resolution. The resolution source for this market will be official information from the U.S. Supreme Court; however, a consensus of credible reporting will also be used.

How trading works

Polymarket uses a central limit order book (CLOB) model — you can buy or sell shares of any outcome at the current market price, or place limit orders at your target price. All positions are settled in USDC when the market resolves.

Resolution

Markets resolve through UMA's Optimistic Oracle. After the market closes, a proposer submits a resolution, followed by a 2-hour dispute window. If no dispute is raised, the resolution is accepted. Disputed markets go to UMA token holder vote.