On September 2, New Jersey filed a petition for a writ of certiorari, ¹ asking the Court to review the Third Circuit's decision in KalshiEX LLC v. Flaherty and to resolve whether sports event contracts traded on CFTC-regulated exchanges are federally regulated swaps or gambling subject to state law.

Commentary has treated eventual Supreme Court review as likely: Sportico’s analysis of the Ninth Circuit decision reached that conclusion, and attorneys writing in the National Law Review described that ruling as deepening a divide that heightens the prospect of Supreme Court resolution.

The market question, however, is whether the procedural timeline permits a grant within either window on Polymarket's “SCOTUS accepts sports event contract case by...?”

As of September 9, prices are roughly 15% by October 31 and 32% by December 31.

One of the strongest predictors of certiorari is a circuit split -- which is a disagreement between federal appeals courts on the same legal question -- and that happens to be the case we find ourselves in.

In April 2026, the Third Circuit held that the Commodity Exchange Act preempts² New Jersey’s gambling laws as applied to Kalshi's sports event contracts.

Then on August 28, the Ninth Circuit reached the opposite conclusion in Kalshi's suit against Nevada, where they held that the sports contracts are likely not “swaps” and that the CEA does not preempt Nevada's gaming laws.

The result of these two rulings is that the same company, offering the same contracts, is lawfully operating in one circuit and enjoinable in another.

First, there’s the matter of timing. The Court's ordinary procedural calendar leaves little room for a grant before either deadline. If Kalshi files a brief in opposition, ³ which they almost certainly will, it’s due roughly 30 days after docketing, and respondents routinely obtain extensions.

So far, the only extension activity in this case occurred when New Jersey applied to extend its own deadline to file the petition, and then when Justice Alito twice extended the state's filing deadline, first to August 4 (per the petition itself) and then to September 3, shorter than the state had requested.

The petition is generally not distributed to the justices for conference ⁴ until briefing is complete; once it is, the Court’s case distribution schedule assigns it to a specific conference date (the justices hold these roughly weekly while the Court is sitting) so the distribution date, which is public, effectively tells you the earliest date the petition can be voted on.

A petition filed September 2 would therefore ordinarily reach conference around late October or November. Adding further time is the fact that the Court also frequently “relists” petitions it is seriously considering, holding them over for one or more additional conferences before deciding, which in significant cases can add weeks.

A grant by October 31 would likely require expedited treatment, which there isn’t any indication of so far. And a grant by December 31 appears feasible on the ordinary schedule, but that roughly requires that Kalshi seek no extension and that the Court act at its first or second conference.

Second, even if the procedural timeline permits a grant by December, the Court may prefer to let the issue “percolate” in the lower courts before stepping in. The Sixth Circuit heard oral argument on July 30 in consolidated appeals involving Kalshi and the states of Ohio and Tennessee, presenting the same preemption question. A pending appeal in a third circuit gives the Court a conventional reason to wait -- allowing an issue to “percolate” is a recognized basis for deferring review -- and Kalshi's opposition can be expected to invoke it.

A Sixth Circuit ruling could also help the petition: a third appellate decision, especially one deepening the split, would leave little reason for the Court to wait for further percolation. But the ruling’s timing is unpredictable, and until it arrives, the pending appeal favors delay.

Third, even a petition presenting a clean split can fail because of the case carrying it. This would be what Supreme Court practitioners call a “vehicle problem.”⁵

Both existing appellate rulings arose from preliminary injunction proceedings. ⁶ The Court has often preferred to wait for final judgments, and Kalshi's opposition can be expected to make that argument. Kalshi also disputes that the split is as clean as New Jersey claims; its spokesperson has argued the Ninth Circuit actually agreed with the principle central to Kalshi's position.

Finally, the Court has a regulatory alternative that could justify avoiding the question entirely.