RALEIGH -

A Charlotte pastor running for North Carolina Republican's nomination for U.S. Senate has singled out two rivals in their final debate.

Mark Harris says they have baggage that could make them unelectable in the fall against Democrat Kay Hagan.
    
He began the third and final debate between the four leading GOP candidates Monday night at the University of North Carolina Television studios by naming state House Speaker Thom Tillis and Cary obstetrician Greg Brannon.
    
Harris says he's worried Hagan will rip Brannon or Tills apart if either one of them win the May 6 primary.

Harris cited a civil lawsuit Brannon lost and is now appealing.

He also says Tillis isn't that committed to preserving North Carolina's gay marriage ban.
    
Nurse Heather Grant also participated in the debate.

Tillis has the statistical lead with 39% in preliminary polls. 

40% of the primary vote is needed to avoid a runoff election, which would be held in June if necessary.

Many state Republicans believe that a runoff is inevitable. National Republicans see this race as a must-win for the GOP if they want to reclaim a majority in the U.S. Senate.