North Carolina's primary brought rebukes to incumbent legislators in both parties, including a razor-thin margin in the closely watched GOP primary challenge to Senate leader Phil Berger. Why did voters reject some longtime leaders in state politics? Why did Berger's home county turn against him in favor of Sheriff Sam Page? And what's next in the vote-counting process and this year's legislative session? To sort through the results, WUNC News' Colin Campbell spoke with Adam Wagner, who covers politics for the North Carolina Newsroom.