Polls have opened Tuesday morning as voters in 37 North Carolina counties prepare to choose their party's nominees in a second round of primary elections.
The most prominent contest is between Mark Walker of Greensboro and Phil Berger Jr., the Rockingham County district attorney and son of Senate leader Phil Berger.
The winner will run against Democrat Laura Fjeld in November.
The winner replaces GOP incumbent Rep. Howard Coble.
Democrats in the 5th Congressional District will choose either software developer Josh Brannon or retired federal employee Gardenia Henley.
The winner faces Republican incumbent Virginia Foxx.