A group of billionaire philanthropists are to donate tens of millions more dollars to develop progressive political ideas in the US in an effort to counter the conservative ascendancy.
George Soros, who made his fortune in the hedge fund industry; Herb and Marion Sandler, the California couple who own a multi-billion-dollar savings and loan business; and Peter Lewis, the chairman of an Ohio insurance company, donated more than $63m (£34m) in the 2004 election cycle to organisations seeking to defeat George W. Bush.
