Polymarket Maryland: Ground Zero for the Whole Fight

Polymarket Maryland sits inside the state where the national prediction-market fight actually began: Maryland regulators sent the country’s first cease-and-desist letter over sports event contracts, a federal judge became the first to side with a state over Kalshi, and on August 13, 2026, the City of Baltimore sued Polymarket by name for the first time in this state’s history. Is Polymarket legal, legit, and safe in Maryland right now? The honest answer runs through two separate courts, neither of which has finished.

Legal status in Maryland

Maryland legalized online sports wagering in 2020 (voter referendum) with implementing legislation in 2021, and the Maryland Lottery and Gaming Control Commission (MLGCC) now licenses roughly a dozen mobile sportsbooks — DraftKings, FanDuel, BetMGM, Caesars among them — while online casino gaming (iGaming) remains illegal; bills to authorize it stalled again in the 2026 General Assembly session. Maryland is also where the national Kalshi fight started: in April 2025 the MLGCC sent Kalshi a cease-and-desist letter, the first such order any state regulator issued over sports event contracts, arguing the product is unlicensed sports wagering under Maryland law. Kalshi sued in the U.S. District Court for the District of Maryland to block enforcement, and on August 1, 2025, Judge Adam B. Abelson denied Kalshi’s request for a preliminary injunction — the first federal ruling anywhere finding a state likely not preempted by the Commodity Exchange Act from regulating Kalshi’s contracts. Kalshi appealed to the Fourth Circuit, and Maryland agreed to pause enforcement until that appeal is decided. At oral argument on May 7, 2026, the three-judge panel sounded skeptical of Kalshi’s position: Judge Stephanie Thacker said the product "just seems like gambling," and Judge Roger Gregory added, "If it quacks, you know, it’s a duck, right? It’s gambling." No ruling had issued as of this writing. That state-level case never named Polymarket — only Kalshi. Polymarket entered Maryland’s legal picture on a different track entirely: on August 13, 2026, Baltimore Mayor Brandon Scott and the city sued both Kalshi and Polymarket, plus distribution partners including Coinbase, Robinhood and Webull, in the Circuit Court for Baltimore City, alleging violations of Baltimore’s Consumer Protection Ordinance and seeking civil penalties of up to $1,000 per violation per day. Polymarket has responded publicly that its CFTC-registered contracts are federally regulated, not subject to city or state gambling law. Neither the Fourth Circuit appeal nor the Baltimore suit had reached a final ruling as of this writing.

State gambling authority: Maryland Lottery and Gaming Control Commission (MLGCC) — sent Kalshi the nation’s first cease-and-desist over sports event contracts (April 2025), now paused pending a Fourth Circuit appeal; Polymarket itself was never named by the state and enters Maryland law only through Baltimore City’s Aug. 13, 2026 lawsuit

Every other Polymarket state page on this site describes a fight that started somewhere else and eventually touched that state. Maryland is where it actually started. This is the state whose regulator sent the country’s first cease-and-desist over sports event contracts, whose federal court handed down the first ruling against Kalshi, and whose largest city just became the first Maryland plaintiff to sue Polymarket by name.

How Maryland Became Ground Zero

The Maryland Lottery and Gaming Control Commission sent Kalshi a cease-and-desist letter in April 2025 — the first order of its kind from any state gaming regulator anywhere in the country. Kalshi sued in the U.S. District Court for the District of Maryland to block it, and on August 1, 2025, Judge Adam B. Abelson denied Kalshi’s request for a preliminary injunction. That made Maryland the first state whose regulators convinced a federal judge they were likely not preempted by the Commodity Exchange Act from treating sports event contracts as gambling. Other states’ cases, including actions later filed in Ohio, New Jersey, Massachusetts and Illinois, followed the pattern Maryland set first.

What the Fourth Circuit judges actually said. At the May 7, 2026 oral argument on Kalshi’s appeal, Judge Stephanie Thacker told Kalshi’s counsel the product "just seems like gambling." Judge Roger Gregory went further: "If it quacks, you know, it’s a duck, right? It’s gambling." No ruling had issued as of this writing, but two of three panel judges did not sound persuaded by the federal- preemption argument.

Where Polymarket Actually Enters This

Here is the detail easy to miss: the MLGCC cease-and-desist, the Abelson ruling and the Fourth Circuit appeal are all Kalshi’s case. Maryland’s state regulator never sent Polymarket a letter and never sued it. Polymarket’s Maryland legal exposure opened on a separate track, on August 13, 2026, when Baltimore Mayor Brandon Scott and the city filed suit in the Circuit Court for Baltimore City against both Kalshi and Polymarket — plus distribution partners Coinbase, Robinhood and Webull — alleging violations of Baltimore’s Consumer Protection Ordinance and seeking civil penalties of up to $1,000 per violation, per day. That is a city ordinance claim, not a continuation of the state’s federal case, even though both rest on the same core theory: that an event contract on a game outcome is a sports bet by another name.

Is Polymarket Legal, Legit, and Safe in Maryland?

Legal: unresolved on both tracks that could reach it — the Fourth Circuit hasn’t ruled on Kalshi’s appeal, and Baltimore’s suit against Polymarket itself is freshly filed and undecided. Legit: Polymarket has publicly maintained its CFTC-registered contracts answer to federal law, not city ordinances; that is a legal position being tested in court, not a settled fact either way. Safe: usable today from a Maryland IP under CFTC oversight and KYC, but without the deposit limits or self-exclusion tools MLGCC requires of its licensed sportsbooks, because those rules were written for an industry Polymarket sits outside of.

What This Means If You’re in Maryland

Two dockets, not one, will decide how this settles here: the Fourth Circuit’s ruling on Kalshi’s appeal, which could reshape the federal-preemption theory Polymarket would lean on if Baltimore’s suit advances, and the Baltimore Circuit Court case itself, the first Maryland action naming Polymarket directly. Neither platform is a way to make money, and an event contract can expire worthless no matter which court rules first. 21+ only, and if it stops feeling like a choice, 1-800-GAMBLER is free and confidential.

Polymarket Maryland — Frequently Asked Questions

Is Polymarket legal in Maryland?

Unresolved on two fronts. The state-level fight — MLGCC’s cease-and-desist, a federal judge’s ruling against Kalshi, now on appeal to the Fourth Circuit — never named Polymarket, only Kalshi, and enforcement is paused pending that appeal anyway. Polymarket’s own Maryland exposure is the City of Baltimore’s August 13, 2026 lawsuit, which is pending and unresolved. No court has ruled against Polymarket specifically in Maryland as of this writing.

Did Maryland really start the national fight against these platforms?

The state-regulator side of it, yes. The MLGCC’s April 2025 cease-and-desist to Kalshi was the first such order from any state gaming regulator, and Judge Abelson’s August 1, 2025 ruling denying Kalshi a preliminary injunction was the first federal decision to find a state likely not preempted by the Commodity Exchange Act. Other states — Ohio, New Jersey, Massachusetts, Illinois — followed with their own actions afterward, several citing the Maryland case.

What did the Fourth Circuit judges say about Kalshi’s contracts?

At the May 7, 2026 oral argument, Judge Stephanie Thacker told Kalshi’s lawyer the product "just seems like gambling," and Judge Roger Gregory said, "If it quacks, you know, it’s a duck, right? It’s gambling." That is not a ruling — no decision had issued as of this writing — but it signals real skepticism from at least two of the three panel judges toward Kalshi’s federal-preemption argument, the same argument Polymarket would need if a similar case reached it.

Is Polymarket legit if Baltimore is suing it for illegal gambling?

Baltimore’s complaint alleges Polymarket’s event contracts function as unlicensed sports betting under the city’s Consumer Protection Ordinance — a licensing and jurisdiction dispute, not a finding that Polymarket rigged markets or withheld payouts. Polymarket has publicly argued its CFTC-registered contracts are federally regulated and outside city authority. The suit is unresolved; "legit" here means the underlying exchange still settles CFTC-designated contracts, while the legal question of whether it needed a Maryland license remains open.

Is Polymarket safe to use from Maryland right now?

Mechanically yes — nothing currently blocks a Maryland IP from Polymarket US, and no injunction has been entered against Polymarket the way Maryland’s state case constrains Kalshi’s posture. "Safe" here is CFTC oversight and KYC, not the deposit limits or self-exclusion tools MLGCC requires of its licensed sportsbooks — those protections don’t reach a product regulators haven’t classified. A contract can expire worthless no matter how either lawsuit resolves.

How is the Baltimore lawsuit different from the state’s case against Kalshi?

Different plaintiff, different law, different court. The MLGCC/Kalshi fight is the State of Maryland, through a state regulator, in federal court, under a cease-and-desist enforcement theory now on appeal to the Fourth Circuit. The Baltimore case is the city itself, in Baltimore’s Circuit Court, under a municipal consumer-protection ordinance with its own per-day penalty structure — and it is the first Maryland action of either kind to name Polymarket directly.

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