Polymarket is offering a $50 bonus with code MASS for new U.S. users during World Cup Round of 32 and Independence Day.
Score a $10 bonus with Kalshi referral code SYRACUSE, perfect for Friday's Round of 32 matchup between Argentina and Cape Verde, plus a full slate of soccer and MLB games, on a regulated exchange.
The Kalshi promo code MASSLIVE1 is verified and active — spend $10, get $10, for $20 total to trade a full Friday MLB slate ...
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