Take a couple of these and call me in the morning:
http://www.palmbeachpost.com "Long Ties to Koch Brothers Key to Cain's Campaign" -Oct. 16, 20011
http://community.feministing.com "Hidden Koch Brother Abuse Exposed in the Keystone XL Oil Pipeline" -Oct. 4, 2001
http://amazon.com/forum "Is Cain in the Koch Brothers Pocket?"
http://fredericacade.worldpress.com "Koch Brothers Buys Republicans in All Fifty States, Yet in Their Own State of Kansas..." -Oct. 17, 2011
Better than any of these, you can find examples of the sleazy nature of the Koch Brothers by simply going to any search engine and simply type in: Koch Brothers. You will find a wide variety of sources to read about the gutter-like activities of the Kochs.
It is ridiculous to compare their "gifts" to right-wing politicians to those of other politicians. First, they try to hide as much as possible. Second, their total amounts dazzle the imagination. Third, they get into every nook and cranny of American politics and secretly use their monied influence. For example, it took the digging of some powerful media giants to even find out the extent of the Koch Brothers on Herman Cain, and how they bought him and composed his agenda. We only know a small part of the Koch influence, and even that boggles the mind.
http://apps.detnews.com/apps/forums/newstalk "Herman Cain: Tool for The Koch Brothers One Percenters"
While you're at it, you might want to check the "patriotic" Koch Brothers and their secret dealings with the government of Iran. These brothers are about as low as you can go, and they are threatening the very core of American politics.