Sources close to Sheldon Adelson in Las Vegas tell Fox News the billionaire casino magnate is getting ready to write the outside group supporting the Newt Gingrich presidential campaign another huge check.

These sources say it could match the initial gift of $11 million Adeslon and his family gave to the "Super Pac" Winning Our Future.

A "Winning our Future" Spokesman had no comment on the story.

Fox News Chief Political Correspondent Carl Cameron contributed to this report

Jake Gibson is a producer working at the Fox News Washington bureau who covers politics, law enforcement and intelligence issues.