For your review:
NC's last Democratic primary runoff (called "2nd primary" by the BOE) was in 2008.
It was for the right to challenge GOP incumbent Cherie Berry for Commissioner of Labor.
We all know how that turned out...in 2008...a Democratic year.
A review of the runoff results is here.
A review of the November 2008 general is here.
Wave to the Elevator Lady! She's one of only two statewide elected GOPers.
Did a primary runoff help keep her there?
I'm not sure.
I do know that Richard Burr is now sitting in a very similar position.