Politics bites. A Michigan GOP county chairwoman has accused a rowdy Democratic protester of chomping her on the arm at a rally for Republican gubernatorial candidate Tudor Dixon — the latest act of mayhem as the midterm elections approach. “I’ve never been bit by an adult in my life, or anyone over 5,” Wayne County Republican Party chairwoman Cheryl Costantino told Detroit’s WXYZ News on Thursday, showing off bruising and teeth marks on her upper left arm. “I couldn’t even raise my arm, like, it was even uncomfortable just to drive,” Costantino said. The demonstrator, a special education teacher in...