Mississippi has come up with creative ideas to clean up its voter rolls while also enlisting standard tools.
It's Secretary of State recently announced that in addition to using the National Change of Address list, it will access data from national credit repository Experian to confirm accurate addresses and state residency.
Mississippi will also be utilizing the new access provided to states to the Social Security Death Master File.
Every state can do this. Every state should.
Press release from Mississippi Secretary of State here:
https://www.sos.ms.gov/press/secretary-states-office-partners-experianr-new-voter-roll-maintenance-data