Four top staff members of Mark Robinson's campaign for North Carolina governor have stepped down, the campaign announced as the candidate faces calls from Republicans to do the same.

North Carolina Lt. Gov. Mark Robinson avoided directly weighing in during a gubernatorial campaign event Saturday on a CNN report outlining evidence that he made disturbing posts on a pornography website’s message board more than a decade ago.

North Carolina Lt. Gov. Mark Robinson has avoided directly weighing in during a gubernatorial campaign event on a CNN report outlining evidence that he made disturbing posts on a pornography website’s message board more than a decade ago.