“Unfortunately our system goes down now and then,” she said.
North Carolina’s State Board of Elections was also forced to switch from using an electronic voting check-in system to a paper-based one at several of its precincts after experiencing “technical problems”.
Elsewhere, the Verge has reported that a company that had provided a get-out-the-vote telephone and texting service to the Clinton campaign had suffered a cyber-attack causing “brief periods of unavailability”.
The news site reported that members of the 4chan chat site had said they had intended to carry out a denial-of-service attack – which involves flooding a target with internet traffic – which might have been responsible.
Meanwhile, Bloomberg has acknowledged “an internal issue” caused its instant messaging tool to stop working for about an hour on Tuesday morning.
The service is used by financial traders and money managers to discuss market-moving events.