Casino and hotel magnate Sheldon Adelson reportedly plans to give an additional

$10 million to a group supporting Newt Gingrich for the Republican presidential nomination.

The donation to Winning Our Future, an independent committee, or Super PAC, that is run by former Gingrich associates, reportedly will be delivered in the coming days, CBS News reported, citing an unnamed source close to Adelson.

The infusion of cash to the Gingrich campaign comes two weeks before the March 6 Super Tuesday primary vote. Ten states — Alaska, Georgia, Idaho, Massachusetts, North Dakota, Ohio, Oklahoma, Tennessee, Vermont and Virginia — will hold primaries or caucuses.

The donation would bring the amount Adelson and his wife have spent to support the Gingrich campaign to $21 million.

Adelson, chairman and CEO of the Las Vegas Sands Corp., is worth more than

$21 billion, according to Forbes magazine. He is a major giver to Birthright Israel. — jta