The frequency at which states should clean up and verify voter roles can vary based on state laws and regulations. However, the National Voter Registration Act (NVRA) requires that states conduct a general voter registration list maintenance program at least once every two years.
However, serious states like OHIO refreshes voter roles ONCE A MONTH!
This maintenance program involves reviewing and removing ineligible voters, such as those who have moved out of state or passed away, removing duplicate registrations, and ensuring that voter registration records are up-to-date.
States may also conduct additional voter list maintenance activities, such as purging inactive voters or running mailings to confirm and update registration information. The timing and scope of these other activities may vary by state.
Overall, it is essential for states to regularly review and update their voter registration rolls to ensure accuracy, prevent voter fraud, and protect the integrity of the election system.