North Carolina Lt. Gov. Mark Robinson, North Carolina's Republican nominee for governor, announced a major staffing shakeup Sunday, days after CNN reported that he had called himself a "black NAZI" on an online porn forum. The big picture: Robinson, who denies making comments outlined in the CNN investigation, announced in a statement that his top adviser Conrad Pogorzelski; Chris Rodriguez, campaign manager; Heather Whillier, finance director; and Jason Rizk, deputy campaign manager "have stepped down from their roles with the campaign." "I appreciate the efforts of these team members who have made the difficult choice to step away from the...