North Carolina’s elections board has ordered a new election in the nation’s last undecided congressional race after reviewing evidence that it was tainted by absentee ballot fraud.

The North Carolina State Board of Elections voted 5-0 on Thursday to hold a new election in the 9th Congressional District. The board did not immediately set a schedule.

Following last November’s election, Republican Mark Harris had held a slim lead over Democrat Dan McCready in unofficial results from the district running from Charlotte through several counties to the east.

But the state refused to certify the win because of absentee-ballot irregularities.

Harris said Thursday during the hearing that he thought a new election should be called.