Mayor Brandon Scott filed suit in Baltimore Circuit Court against Kalshi and Polymarket on grounds that neither company holds a Maryland gaming license and that both violated the state's consumer protection statutes. That is a different argument from anything the prediction markets industry has faced before, and it matters more than the headline suggests.
Every legal challenge Kalshi has beaten back so far has lived on federal turf — CFTC jurisdiction, the Commodity Exchange Act, preemption doctrine. The King County injunction in Washington was a restraining order, not a consumer protection action. Baltimore is not arguing that Kalshi operates outside federal authority. Baltimore is arguing that regardless of what the CFTC permits, Maryland residents were sold something they weren't told was gambling, and that the state has independent standing to remedy that.
Consumer protection statutes are designed for exactly this kind of gap. They do not require the city to prove that Kalshi violated a gaming regulation. They require the city to prove that a company made material misrepresentations to Maryland consumers about the nature of what they were purchasing. Whether a prediction market contract is "gambling" under Maryland law is almost certainly going to be litigated, but that is a harder question for Kalshi to dispose of on a motion to dismiss than a federal preemption argument.
I have watched preemption defenses succeed against state gaming regulators before. The CFTC's explicit approval of event contracts is a strong shield against a state gaming board. It is a weaker shield against a consumer protection bureau, because the question shifts from "what is this product" to "what did you tell the customer it was." Kalshi's terms of service language will be in discovery. Its marketing copy will be in discovery. That exposure is new.
The Polymarket dimension is a different problem. Polymarket operates on a crypto-settlement model and does not hold a CFTC designation the way Kalshi does. Its federal cover is thinner. A consumer protection suit targeting Polymarket's Maryland user base does not run into the same preemption wall at all, which means Baltimore may have chosen its defendants in a sequence that is strategically deliberate: tie Kalshi to Polymarket in the same filing, and whatever federal shield Kalshi raises looks like it's being used to cover a company that doesn't have one.
The reporting does not say how many Maryland users either platform has, and I won't invent that number. What the filing establishes is the theory, and the theory is exportable. If Baltimore gets past a motion to dismiss on consumer protection grounds, every city attorney in a state without explicit prediction market legislation has a template. The CFTC's approval of Kalshi's contracts would not block those suits. It would simply become one exhibit among many.
