Key Speakers At The Conservative Political Action Conference [Getty Images]

Attendee Adam Gabbatt holds photos of possible presidential candidates to question attendees during the Conservative Political Action Conference (CPAC) in National Harbor, Maryland, U.S., on Thursday, Feb. 26, 2015. The 42nd annual CPAC, which runs until Feb. 28, features most of the potential Republican candidates for president, from Ben Carson and Carly Fiorina to Jeb Bush and Scott Walker. Photographer: Andrew Harrer/Bloomberg via Getty Images

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