Most states on this site are fighting over whether a prediction market counts as a sportsbook. Oregon skipped that fight and built a system where the question barely matters: there is exactly one legal online sportsbook here, the state runs it, and everyone else — Kalshi, Polymarket, any book that isn't DraftKings — is outside the fence by design, not by court order.

Is Polymarket Legal in Oregon? Start With the Monopoly

The Oregon Lottery launched its own mobile sportsbook app, Scoreboard, in 2019, then handed exclusive statewide mobile wagering to DraftKings in January 2022. That is not a licensing floor other operators can clear — it is a single state contract with no second slot. Oregon State Police Gaming Enforcement handles compliance oversight; online casino games are flatly illegal regardless of who runs them. A prediction-market platform was never going to fit into a structure built around one government-run app.

The felony statute underneath it. ORS 167.109 makes it a Class C felony for an internet gambling business to knowingly accept payments tied to unlawful online betting. It predates prediction markets and was aimed at offshore sportsbooks, but its language does not carve out CFTC-regulated exchanges — it has simply never been tested against one in Oregon court.

The Lawsuit That Named Kalshi, Not Polymarket

On February 20, 2026, Oregon bettor Ian Reynolds filed a federal class action — Reynolds v. Kalshi Inc. et al., No. 3:26-cv-00336 — in the U.S. District Court for the District of Oregon, accusing Kalshi and its market maker, Susquehanna, of running an "illegal online gambling enterprise" under state law. The suit leans on ORS 30.740, Oregon's loss-recovery statute, which lets a gambling loser sue to recover double what they lost from the operator that took it. The case was transferred to the Southern District of New York on June 22, 2026. Polymarket is not a defendant. The complaint names Kalshi entities and Susquehanna only.

Why "Not Named" Isn't "Cleared"

ORS 30.740 does not care which brand a bettor used — it targets the conduct, unlicensed gambling under Oregon law, not a specific company. Reynolds happened to bet on Kalshi. Polymarket US runs the same category of sports event contract, under the same CFTC designation Kalshi has leaned on in other states' courts. If the Reynolds theory holds up in New York, it is a template, not a one-brand ruling, and Oregon's monopoly framework gives it nowhere friendly to land for anyone who isn't DraftKings.

Is Polymarket Legit and Safe in Oregon?

Legit: Polymarket US (QCX LLC) is a CFTC-designated contract market with KYC accounts and dollar settlement nationwide, and nothing in the Reynolds complaint alleges fraud — it is a gambling-classification argument aimed at a competitor. Safe: an Oregon IP reaches Polymarket US today with no order blocking it, but that sits next to a felony statute for unlicensed internet gambling businesses and a double-damages recovery law already being tested in federal court against a platform that does the same thing. The international polymarket.com site remains geo-blocked to all US IPs regardless of state.

None of this is a way to make money, in a monopoly state or anywhere else — an event contract can expire worthless no matter who runs the book. 21+ only, and if it stops feeling like a choice, 1-800-GAMBLER is free and confidential.