The ABCs of the RNC: Super PACS v 501(c)(4) nonprofits
In America, thanks to two 2010 federal court rulings, you can support your candidate by contributing to a Super PAC or a 501 (c) (4) non-profit.
What's the difference?
501 (c) (4) (e.g. Americans for Prosperity) non-profits are "social welfare" organizations. They do not have to disclose their donors.