Place: Cuyahoga county
Year: 2006,
Action: 10,000 illegal votes.
Result: couldn’t be removed, it would violate voter privacy.
An estimated 12,000 voters in Cuyahoga County cast votes without first fulfilling requirements that they sign the pollbook and show identification. Thousands voted illegally, Cleveland Plain Dealer, December 5, 2006. This problem reportedly occurred in 533 of Cuyahoga’s 570 voting precincts. Officials believe a combination of long lines and insufficient training led to the security breach. Because ballots are cast anonymously, officials say there is no way to identify the ballots that were cast illegally.
http://moritzlaw.osu.edu/electionlaw/election06/OhioElectionOverviewNovember2006.php