Pinellas County officials still don’t know exactly what went wrong with the county’s election system during Tuesday’s primary. Minutes after the polls closed, election workers found themselves unable to electronically transmit the vote tallies to the main office in Largo. Instead, they drove the memory sticks to election headquarters, delaying publication of the final results by about 90 minutes. The problem, county officials said, came from the phone lines leading into the server. But on Wednesday they could not say what might have caused the phone lines to fail, or how quickly county technicians would be able to repair them. Supervisor of Elections Deborah Clark on Tuesday promised that the system would be up and running in time for the Nov. 6 general election. “They’ll just have to look and see where the problem came from and they’ve assured us they’ll work to take care of it as soon as possible,” said spokeswoman Nancy Whitlock.