We should probably start challenging double registrations ahead of time. Can that be done?
Not sure. Prior to the election I would think a full-page newspaper ad that simply states the voter requirements, penalties and the ramifications of changing ones permanent state of residence to vote.
And the voter registration info is public record. After the election you can simply request the info and match up voters voting in the UVA area with their previous voting registration location and check both to see if they voted twice.