Deputy campaign manager, Obama for America
The field-organizing whiz who led the charge for Obama in 2008 battlegrounds is back at it for the President. Inside the reelection campaign's Chicago headquarters, she's chief deputy to top-dog Jim Messina. But her most important charge is readying the ground game in swing states, where Democrats are counting on a superior effort to help them overcome the spending edge Republicans are expected to enjoy.
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.