Primary voters in North Carolina are going to the polls on Tuesday, looking to thin a field of more than two dozen candidates who are running to replace Walter B. Jones Jr., a longtime congressman who died in February. Mr. Jones, a Republican, had held the seat in the Third Congressional District on the Atlantic Coast from 1995 until his death.

Polls are open from 6:30 a.m. to 7:30 p.m. Eastern. Voters can find their election day polling place with the state’s voter lookup or polling place tools. As of Friday, about four percent of voters had already cast early votes.

First results, usually of early voting, are expected shortly after polls close. The Times will have live results and maps when data is available.

If no candidate receives more than 30 percent of the vote on Tuesday, the candidate who receives the second highest number of votes may demand a second primary, which would take place July 9.