South Dakota candidate for state Senate David Johnson is working on petitions for a recount.
Rapid City incumbent Republican Phil Jensen won 1,234 votes - 30 more than Johnson in Tuesday's primary.
The difference between the two candidates is within the 2 percent margin required for a recount. The winner will face Democrat Robin Page in the November election.
Candidates have three days after the vote counts are finalized by the Secretary of State's office to file the petition.
Johnson must submit petitions to the auditors in Meade and Pennington counties by Friday.
Brandon Johnson is the Secretary of State's office senior elections coordinator. He says he can't think of an instance when a recount has reversed the pronounced results. He adds that the automatic tabulating equipment is very accurate.