"Dark Money" is the term for campaign contributions made by someone whose identity need not be made public, at least prior to the election! The Sunlight Foundation supposedly invented the term in 2010.
Sources of "Dark Money" include PACs and 501(c)4s and other special interest groups NOT "directly coordinated" with candidates (except where judges have ruled that such coordination is legal, like Wisconsin!)
Open Secrets.Org Outside Spending Analysis (Federal Elections)
STATE Advertising Money!!!! - NEW addition to the page!!!!
Also see Sunlight Foundation.com Tools and Projects page! (This will open a NEW window. To get back here, just X out of the new window.)