Maine iGaming Launch: Caesars Locks Three of Four Tribal Casino Licenses

⏱ 3 min read

Caesars Entertainment has locked up three of Maine's four available online casino licenses, announcing on June 24, 2026 an expanded partnership with the Penobscot Nation, the Mi'kmaq Nation, and the Houlton Band of Maliseet Indians to bring Caesars Palace Online Casino, Horseshoe Online Casino, and Caesars Sportsbook to the state's incoming iGaming market. Maine is set to become the eighth state with regulated real-money online casinos, with its enabling law — LD 1164 — taking effect July 29, 2026.

The deal cements Caesars' dominant position before a single spin is played, building on its existing sports betting partnerships with the same three Wabanaki Nations. DraftKings is widely expected to secure the fourth license through its sportsbook partner, the Passamaquoddy Tribe, though no formal announcement has been made. Complicating the launch timeline, Churchill Downs Incorporated — parent of Oxford Casino — filed a federal lawsuit on January 23, 2026, challenging LD 1164 as an unconstitutional race-based monopoly, a case the Wabanaki Nations have since joined as co-defendants.

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The Caesars–Wabanaki Deal

Eric Hession, President of Caesars Digital, described the expansion as a natural progression of an existing relationship, saying the next phase "reinforces our commitment to our tribal partners and to delivering a differentiated, localized digital gaming experience for Mainers." The announcement builds on a sports wagering partnership that began in 2023, when Caesars became the first operator to accept retail sports wagers in Maine through its Wabanaki alliance.

Under the arrangement, the three tribes hold the actual licenses — each paying a $50,000 per-license fee — while Caesars serves as the technology and operational partner. This structure reflects Maine's deliberate policy choice: commercial operators cannot apply for iGaming licenses on their own. The state capped each tribe at one commercial technology partner, which is why Caesars' three-tribe alignment effectively secures 75% of the available market at launch.

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How Maine's Tribal-Exclusive Model Works

Governor Janet Mills allowed LD 1164, titled "An Act to Create Economic Opportunity for the Wabanaki Nations," to become law in January 2026 without her signature, citing a belief that the state's Gambling Control Unit could implement appropriate safeguards. The law grants Maine's four federally recognized tribes exclusive online casino rights — a direct parallel to the sports betting exclusivity they have held since 2023, under which the tribes generated $66 million in profits.

Key structural elements of the law include:

• Each tribe may partner with one third-party commercial operator to run its online casino platform.
• Online casino revenue is taxed at 18% — raised from the original 16% proposal during Senate debate.
• Legislators estimated iGaming will generate more than $3.5 million in additional tax revenue by FY2027.
• Commercial land-based casinos are explicitly prohibited from partnering with any tribe, closing the only indirect entry point.
• The law takes effect July 29, 2026, but the Maine Gambling Control Unit is still finalizing licensing regulations; actual platform launches are expected in late 2026 or early 2027.

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The Churchill Downs Federal Lawsuit

Churchill Downs Incorporated, which has operated Oxford Casino since 2013 and paid more than $40 million in gaming taxes in Maine, filed suit on January 23, 2026 in the U.S. District Court for the District of Maine, naming Gambling Control Unit Executive Director Milton Champion as sole defendant. The complaint alleges LD 1164 violates the Equal Protection Clauses of both the U.S. and Maine constitutions, characterizing the law as "a race-based monopoly."

A commissioned study cited in the filing estimated that online casino expansion could eliminate up to 378 retail casino jobs, reduce state GDP by nearly $60 million, and cause Maine's land-based casinos to lose approximately $69 million in revenue by 2029. In April 2026, a federal judge allowed the Wabanaki Nations to intervene as co-defendants, broadening the legal battle. The National Association Against iGaming — of which Churchill Downs is a founding member — has separately threatened a People's Veto ballot campaign to invalidate the law entirely.

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Maine vs. Established iGaming States

Maine will enter the market at a moment of substantial momentum for online casino gaming nationwide. According to the American Gaming Association's State of the States 2026 report, iGaming across the seven existing legal states hit a record $10.73 billion in gross gaming revenue in 2025, a gain of 27.6% year-over-year. Pennsylvania, Michigan, and New Jersey account for roughly 90% of that total. Maine will be a far smaller market by population, but the tribal sovereignty framework it is testing is closely watched by other states.

State	iGaming Since	Tax Rate	# of Licenses	2025 iGaming Revenue
Pennsylvania	2019	54% (slots) / 16% (table games)	13+	$3.46 billion
New Jersey	2013	15%	30+	~$2.91 billion
Michigan	2021	4%–28% (tiered)	15	~$2.0 billion
West Virginia	2020	15%	10+	Part of national total
Maine (pending)	Late 2026 / 2027	18%	4 (tribal only)	Projected >$3.5M (FY2027 tax)

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Timeline and What to Watch

Three overlapping tracks will determine when — and whether — Maine's online casinos go live.

• Regulatory rulemaking: The Maine Gambling Control Unit must finalize licensing regulations before any platform can accept real-money wagers. Industry observers note this process may push actual launches into early 2027.
• The Churchill Downs lawsuit: A ruling against LD 1164 on Equal Protection grounds could void the entire tribal-exclusive structure. The case's outcome may also influence how other states design tribal iGaming legislation.
• The fourth license: The Passamaquoddy Tribe has not announced a commercial partner. DraftKings, which already handles the tribe's sports wagering, is considered the leading candidate. Whichever operator secures this skin will be the only one in Maine without a Caesars connection.
• People's Veto threat: The National Association Against iGaming is reportedly gathering petition signatures to place a referendum on the ballot that would repeal LD 1164 before any casino launches.

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Sources

This article draws on primary operator announcements, court filings, official state regulatory materials, and trade coverage from multiple outlets published between January and July 2026.

The single biggest dial-mover for BetMGM is more iGaming states. That's the mic-drop moment. That's bold and underlined, with a full stop at the end.

— Adam Greenblatt, CEO, BetMGM · Q4 2025 Earnings Call, February 2026