Manager of Rothstein Rosenfeldt Adler's press and public relations division; blogger at Power/Influence: An expert on opposition research and a legend among GOP operatives, he's known for not being afraid to cross any boundary. Republican operatives fear him for his ability to create limitless bad news for anyone who attracts his wrath. One apparent example: Former New York Gov. Eliot Spitzer. The New York Post reported that it was Stone who tipped off the FBI about Spitzer's tryst with a prostitute. Role in Campaign '08: He geared up to stop Hillary during the primaries. Will Sen. Barack Obama be his next target? Who Knew: Employs a full-time veritable bodyguard nicknamed "A-Mill."