“Miller said when he was a member of McCain’s campaign staff last year has been criticized by the more conservative party members who supported Republican opponent J.D. Hayworth. The first and only African-American to hold the party’s precinct chairmanship, Miller said he has been called “McCain’s boy,” and during the campaign saw a critic form his hand in the shape of a gun and point it at him.
“I wasn’t going to resign but decided to quit after what happened Saturday,” Miller said. “I love the Republican Party but I don’t want to take a bullet for anyone.”"