Michigan Secretary of State Ruth Johnson (R) appears to be doing a bang up job since taking office and has eliminated some 30,000 deceased voters from Michigan's voter rolls.
An audit of voting records over the period from 2008 to 2011 showed that more than 1300 deceased voters had cast ballots over the audit period though an official quoted in the source article said "in every instance where it appears a deceased person or incarcerated person voted and local records were available, a clerical error was established as the reason for the situation."
whatever that means.
In any case, it is good to see Michigan joining several other states in getting their voter rolls cleaned up in preparation for the 2012 vote. It promises to be a much cleaner election in many states this year.