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Yes 41%
Only Polymarket lists this market, so there is no second price to compare.
Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.
Prices come from our regular polls of each venue, the oldest 1 h ago. Ages are as of when this page was built.

The leading outcome on both venues, with the consensus between them. Hover for exact values.
Each venue’s resting orders for the Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.
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Enter a stake to see where it buys the most after fees, using each venue’s live order book.
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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.04 × price × (1 − price) per share (politics rate). Fee calculator. Estimates only, not advice.
Live prediction market odds for "Supreme Court revives Arizona's proof-of-citizenship voting rules?". Yes leads at 41%. $2K has traded across 1 outcome on Polymarket. The market is expected to resolve by Aug 2, 2027.
This market will resolve to “Yes” if the United States Supreme Court, in Republican National Committee v. Mi Familia Vota (No. 25-1017), issues a decision on the merits that reverses or vacates, in whole or in part, the Ninth Circuit’s judgment holding provisions of Arizona’s 2022 voter-citizenship laws (the documentary proof-of-citizenship requirements and the related pre-election removal rules for suspected noncitizens) unenforceable, by August 1, 2027, 11:59 PM ET. Otherwise, this market will resolve to “No”. Only a decision on the merits of this case (a written opinion, summary disposition, or per curiam opinion) will qualify. Emergency orders, stays, and other interim orders will not qualify. A decision that vacates the Ninth Circuit’s judgment and remands for further proceedings will resolve this market to “Yes”. A decision that affirms the Ninth Circuit’s judgment in full will resolve this market to “No”. If the case is dismissed as improvidently granted, dismissed for mootness, withdrawn or settled, or otherwise concluded without a decision on the merits, or no qualifying decision has been issued by August 1, 2027, 11:59 PM ET, this market will resolve to “No”, regardless of whether the case remains pending or of the status of any lower-court ruling. 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.
It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.
A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.
Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.
Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.
Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.