Sheldon Adelson, billionaire casino magnate, Republican donor and former Newt Gingrich backer, has said that his political donations this election cycle will be “limitless,” leading some to speculate his individual contributions might exceed $100 million in favor of Mitt Romney.

Forbes has confirmed that billionaire Sheldon Adelson, along with his wife Miriam, has donated $10 million to the leading Super PAC supporting presumptive Republican presidential nominee Mitt Romney–and that’s just the tip of the iceberg. A well-placed source in the Adelson camp with direct knowledge of the casino billionaire’s thinking says that further donations will be “limitless.”