The Best Online Gambling Washington State Sites List 2023 1933 – Betting on horse racing is legalized.1971 – Lotteries and raffles finally become legal.1973 – The Washington State Gambling Commission is set up in order to regulate social gambling like lotteries, bingo, mahjong, raffles and other amusement games.1987 – Off-track horse betting becomes legal.1988 – The Indian Gaming Regulatory Act passes, granting permission for tribal casinos to operate.2020 – Sportsbooks legalized on Indian land.September 28th 2021 – FanDuel enters a partnership with Suquamish Clearwater Casino and enters Washington’s gaming industry.December 20th 2021 – BetMGM becomes available at Tacoma’s Emerald Queen Casino for sportsbetting.January 10th 2022 – A bill SB5212 is entered with the purpose to legalize sports betting in locations as racetracks and card rooms.January 19th 2022 – DraftKings makes public their agreement with the Tualip Tribes to provide retail sportsbook at Tualip Resort Casino and Quil Ceda Creek Casino.Here’s a timeline of the key events in the state. But in 1933, lawmakers opted to allow betting on horse racing, the first in a series of moves to open up gambling to those in Washington state. The history of legal wagering in the Evergreen State begins in 1899, as that’s when gambling was first prohibited by law. Timeline of Washington State Gambling Legislation