North Carolina Lt. Gov. Mark Robinson, the Republican nominee in the state’s gubernatorial race, lost two powerful supporters on Monday. 

Govs. Brian Kemp (R-GA) and Bill Lee (R-TN), who leads the Republican Governors Association, pulled support for Robinson’s embattled campaign after allegations he made offensive comments on a pornographic website. Their move could mark a blow to Robinson’s bid to become the first Republican to win North Carolina’s governor seat since 1985.