$500M thrown at sports gambling Props 26 and 27: These are the biggest donors

Proponents of legalizing sports gambling have poured more money into this year's California proposition campaigns than any other proposition in the state's history. Most propositions have raised under $10 million each, while Prop 26 and Prop 27 raised hundreds of millions.

$500 million has been spent on sports gambling propositions 26 and 27. Native American tribes back Proposition 26, which would make sport betting legal in-person only. Online sports betting companies are pushing for Proposition 27, because it would legalize sportsbetting online for Californians everywhere.

$151,478,519 total raised for Props 26 and 27. Biggest donors in support of Prop. 26 are Native American tribes in California. The biggest donors against Prop 26 were five California tribal casinos. Prop 27 requires racetracks to pay the state 10% of sports bets made each day. The payments would go into a new California Sports Wagering Fund.

$151,478,519 was raised. There were 50 contributions to support and 75 contributions for opposition.

FanDuel, BetMGM and DraftKings are big donors in support of Prop. 27. The biggest donors are sports betting and digital gaming entertainment companies. Prop 27 is a ballot measure to legalize online sports gambling in California. It would be a violation of the gaming exclusivity between California voters and Native American Tribes.

$369,931,682 total raised. Contributions made in support: $169.2 million (23 contributions), contributions made to opposition: $200.7 million.