A billionaire casino magnate is putting up more money to defeat a proposal to legalize medical marijuana.
New campaign finance reports filed Friday show Sheldon Adelson has donated another $1.5 million to the group that wants to defeat the constitutional amendment that will be on November ballot.
Adelson, a high-profile Republican donor and CEO of Las Vegas Sands Corp., has given a total of $4 million to the Drug Free Florida Committee.
The committee is using the money to pay for television ads criticizing Amendment 2. Adelson's donations represent 84 percent of the money raised by the group.
Adelson's wife is a physician who helped found drug-abuse treatment centers.
Adelson recently dropped a spot to 12th on the Forbes list of the richest people in the U.S.