Herman Cain is the favorite of the Killionaire Koch brothers:

What goes unremarked in such profiles is Cain’s connection to the Americans for Prosperity Foundation, the organization founded by David Koch, and chaired by Koch himself…Go to the issues page of the Herman Cain for President Web site, and you’ll find an agenda not unlike that of Americans for Prosperity — in fact, almost exactly like that of Americans for Prosperity
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When Cain’s presidential candidacy was launched, it’s likely that his AFP-linked backers never expected he would win the GOP presidential nomination, but that he would make an effective messenger for pushing the party further to the Koch positions. As it looks now, Cain could do even better than that, given the weak GOP presidential field. With each contest in primary season, contenders win delegates to the national convention, where the party platform is laid. Cain will likely do well in New Hampshire — he could even win the state, as Patrick J. Buchanan did with his populist rhetoric in 1996. And with that win, and strong showings in a few other states, the Buchananites won control of the GOP platform, causing the legitimate candidate, Bob Dole, to run on a platform he could hardly stomach.