Mystery Donors Pumped Millions Into Liberal ‘Dark Money’ Group

A liberal "dark money" group that leads national and state-based Democratic coalitions and dubs itself the “hub of the progressive community” raised $13.4 million in its most recent fiscal year, spending about 43 percent of the total on “direct or indirect campaign activities,” according to a recently released tax document, a copy of which was obtained by the Center for Public Integrity.