An organization called Opportunity Wisconsin is running a seven-figure ad campaign to unseat Reps. Bryan Steil (R-WI) and Derrick Van Orden (R-WI) in November. “Opportunity Wisconsin,” thus, is one of the aliases under which the North Fund can operate. Through its complex organizational structure, Opportunity Wisconsin can hide from the public to whom it provides funding and who it pays for services. The DC-based North Fund, with its tens of millions in assets from undisclosed donors, could very well be footing the bill. Opportunity Wisconsin and the North Fund did not respond to requests for comment.