Campaign manager, Mitt Romney for President
Rhoades has been a diligently low-key, data-oriented operator at the helm of the Romney campaign, just like his boss. An opposition researcher by training, Rhoades is credited internally with keeping the team disciplined through a sprawling primary season. He remains the go-to guy on matters both picayune and profound, so he could expect a major portfolio in a Romney administration -- and more attention, whether he wants it or not.
Who are 2012's young business stars? We've got the CEO of a blue-chip beer brand, an airline CEO who just placed the largest order in commercial aviation history, and Warren Buffett's new prodigy, among the Silicon Valley hotshots and others.