South Korean Police Probe Polymarket Users Over Illegal Election Betting

South Korean police are reportedly investigating local users of Polymarket on suspicion of illegal gambling, marking the first known domestic case involving users of the crypto-native prediction market.

The investigation is being handled by Gangwon Provincial Police at the request of the National Police Agency, with the immediate focus placed on Korean users rather than a confirmed enforcement action against the platform itself. The case is tied to betting activity around South Korea’s June 3 local elections, where political outcome markets turned domestic election attention into tradable event contracts.

Polymarket is one of the largest onchain prediction-market platforms, letting users trade real-money positions on politics, sports, crypto, finance, culture and other real-world outcomes. That model has become one of crypto’s strongest consumer use cases, but it also sits directly in the gap between market trading, gambling law, election regulation and local access restrictions.

The Korean case remains at the investigation stage. No public conviction, fine or final enforcement outcome has been confirmed.

Election Markets Bring Legal Risk Into Focus

The legal pressure appears to center on whether South Korean users placed unauthorized bets on political outcomes. Polymarket was reportedly accessible in South Korea without IP circumvention, which makes the case less about bypassing a blocked site and more about whether domestic users violated gambling restrictions by trading election markets.

The scale was not small. Polymarket’s resolved 2026 Seoul mayoral election market showed $52.2 million in volume, while its broader 2026 South Korean local elections party-winner market showed another $3 million traded. That puts the activity well into the tens of billions of won across major Korean election markets.

South Korean gambling law leaves little room for unauthorized betting. Article 246 of the Criminal Act states that gambling can be punished by a fine of up to 10 million won, with a carveout for mere pastime activity. Habitual gambling carries heavier penalties, including imprisonment with labor for up to three years or a fine of up to 20 million won.

The National Gambling Control Commission also treats illegal online gambling and illegal Sports Toto as enforcement categories, reinforcing how tightly the country separates authorized betting channels from parallel online wagering.

Prediction Markets Face A Wider Compliance Test

The probe adds South Korea to the growing list of jurisdictions testing whether prediction markets should be handled as financial event contracts, gambling products or something in between. That pressure has already surfaced in Europe, where Spain blocked Polymarket and Kalshi during a gambling-authorization review.

For Polymarket, the Korean case lands as the platform expands beyond its original event-contract model. Its perps beta has pushed the product closer to active trading infrastructure, while earlier compliance debate around identity checks and restricted access showed how quickly jurisdictional questions can become a product issue.