Rep. Robert Pittenger of North Carolina became the first House Republican incumbent to lose in a primary in the 2018 midterm election cycle.
Rep. Robert Pittenger of North Carolina became the first House Republican incumbent to lose in a primary in the 2018 midterm election cycle.

Washington (CNN)North Carolina’s Rep. Robert Pittenger became the first House incumbent to lose his seat in a primary in the 2018 midterm election cycle, conceding the race Tuesday to conservative pastor Mark Harris.

Pittenger, a…