Many problems plagued the ES&S iVotronic touch screen voting machines in 16 of the 312 Mahoning County precincts.*

Some of the machines malfunctioned, others had problems with the personal electronic ballot cartridge placed into the machines before each vote to count the ballots, and other problems were caused by human error, Munroe said. ...

Also, there were 20 to 30 machines that needed to be recalibrated during the voting process because some votes for a candidate were being counted for that candidate's opponent, Munroe said. ...

About a dozen machines needed to be reset because they essentially froze.