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Rand Paul: I Signed Cotton Letter to Help Obama ‘Negotiate from a Position of Strength’
He tries to convince realists that he didn't bail on them.

Sen. Rand Paul (R-KY) campaigns for Georgia Senate candidate David Perdue (left) during a campaign stop at the McDonough Square on October 24, 2014 in McDonough, Georgia.
Photo by Jessica McGowan/Getty Images