Casino giant Bally’s on Saturday poured $1 million into the campaign for a casino at the Lake of the Ozarks, boosting the effort with a month to go before the Nov. 5 election.

The campaign for Amendment 5 also received $500,000 each from Eldon-based Osage Landing Development Co. and RIS Inc., bringing the weekend haul to more than $2 million.

Bally’s has helped bankroll the effort, which, if successful, would allow for a casino on a site on the Osage River below the Bagnell Dam, which created the popular boating and recreation destination in mid-Missouri.