North Carolina's 13th Congressional District heading to a runoff

Driving the news: Brad Knott, a former federal prosecutor from Raleigh, called for the runoff on Wednesday after finishing second in the Republican primary with 18.7% of the vote.

• Kelly Daughtry, a Smithfield attorney, finished first, with 27.4% of the vote. The threshold needed to avoid a runoff is 30%.

What's next: The decision will pit Knott against Daughtry in a May 14 runoff election.

• The winner would then face Frank Pierce, who ran unopposed in the Democratic primary, in November.

State of play: The 13th district touches the the northern and southeastern parts of Wake County and includes counties like Johnston, Harnett and Franklin.

• Daughtry raised the most money in the district, with $2.1 million, according to election filings.
• Knott raised the third most at $736,000.

Go deeper: More March 5 primary results from around the Triangle