The Kansas secretary of state's office says Harvey County is being forced to count thousands of ballots by hand.
The problem has delayed the south-central Kansas county's results and prevented the state from tabulating its first, final count from Tuesday's election.
A spokeswoman for the secretary of state's office, Stephanie Meyer, said a malfunctioning central scanner led to the hand count.
Voters in Harvey County fill in paper ballots, which are then fed into a central scanner to be counted.
But Meyer said sometime Tuesday evening, the machine stopped accepting ballots.