A series of messages forwarded to The Daily Caller show a top aide to former Alaska Gov. and possible presidential candidate Sarah Palin mocking top political figures and even her boss’s own daughter, Bristol Palin. RedState.com founder and CNN contributor Erick Erickson is “a total douchebag,” wrote Palin speechwriter and domestic policy adviser Rebecca Mansour in a May 22, 2010, message. “Greasy dumb ass with a talent for self-promotion. He threw himself in at the Gov’s SC rally. Self-promotion.” (Erickson said South Carolina Gov. Nikki Haley invited him to the rally). Mitt Romney supporters are “wacky as hell,” Mansour wrote,...