According to this Mother Jones report by Andy Kroll and Tasneem Raja, just 47 people give the bulk of money to those super-PACs that have so much sway over your world.
Do be sure to hit the link and learn more disheartening stuff.
And thanks, DickG., for the link.
Dating Jesus 
Citizens Unitedis the single worst thing to happen to this country. Some one needs to hurry and challenge this in court and pray it gets overturned.
I agree that Citizens United is a terrible thing. But it was a US Supreme Court decision, and there is no higher court.
The same nine justices are on the Supreme Court today as were on the Court when it decided that case by a 5-4 margin. So unless one of the majority group changed his mind (they were all men), the Supreme Court would not even agree to take such a case.
Practically speaking the only way to overturn that case is with a Constitutional amendment, or having such a case come up again in the far future when the makeup of the court is significantly different. I think the chances of either are very slim, particularly now that the incredibly small number of indescribably wealthy people in this country now have a clear go-ahead to solidify their ownership of and control over the federal and state governments.