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The Polymarket referral code OREGON has been announced for Monday, activating a $50 bonus in California, Washington State, ...

Polymarket offers a $50 bonus with invite code CUSE for new users in select states to trade on live World Cup prediction ...

Polymarket and Kalshi have extended their invite and promo codes through July — $70 to trade on Polymarket, $20 on Kalshi — ...

Polymarket is offering a $50 bonus with code MASS for new U.S. users during World Cup Round of 32 and Independence Day.

Polymarket offers new U.S. users a $50 bonus for World Cup trades with code OREGON after a $20 deposit during the knockout ...

New players can register with Polymarket promo code NOLA and make a cash deposit of $20 to unlock a $50 bonus for the World Cup.

The verified Polymarket and Kalshi invite and promo codes have been extended through July 4th weekend — $70 to trade on ...