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8. Valerie Jarrett
Valerie Jarrett
Senior Adviser to the President
Last year's rank: 5

Obama's liaison to the business world gets mixed reviews from corporate chiefs increasingly at odds with the White House. But she still has the President's ear -- and could replace Rahm Emanuel as chief of staff if he seeks a mayoral bid in Chicago.

NEXT: Diana Farrell

Last updated September 29 2010: 11:28 AM ET
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