One of the effects of the Supreme Court’s Citizens United decision is that it allowed corporations to give unlimited amounts to independent expenditure political action committees capable of supporting or opposing political candidates.

But a new report from the non-profit group Demos shows that the majority, 55.6 percent, of donations to super PACs in 2010 and 2011 still came from individuals rather than for-profit entities. The report finds that 17 percent ($30 million) of the itemized funds raised by super PACs came from for-profit businesses, with the rest coming from 527 political action organizations, 501(c)(4)s, unions and other super PACs. 

This chart from Demos breaks it down: