A Survey USA poll last August found that, when asked whether corporate campaign contributions represent "free speech" or "bribes," 77 percent said "bribes."
The case: Citizens United. The decision: In a 5-4 vote, the Supreme Court ruled that it was unconstitutional to limit in any way the amount of money corporations can spend on attack ads or other "electioneering communications" to sway a political race. Before Citizens United, plenty of corporate money had found its way into political PACs and other avenues to influence elections. The court also did nothing to strike down the ban on direct corporate contributions to candidates or political parties.
But the decision opened a massive loophole in our country's already-porous campaign finance system, giving corporations the green light to inject unlimited sums of cash into independent groups -- 527s and 501c4s, references to their IRS tax status -- that can intervene in elections.
After the January 2010 decision, many in the media reported that corporations may be skittish about fully exploiting Citizens United's political windfall, but that proved premature. Millions of dollars began flooding into existing electioneering like Americans for Prosperity, backed by benefactors like the Koch brothers and North Carolina retail magnate Art Pope. New groups like Karl Rove's American Crossroads and American Crossroads GPS were quickly erected to funnel tens of millions of dollars into key congressional races.