[Daseal]

The best way to stop voter fraud is to stop the manual process and put voting machines into place. This can be run relatively cheaply and it has far better capacity to ensure no votes have been double cast, etc. Enter SSN. Then have queries to check if deceased, felon, etc etc. I'm sure there's a more effective method out there as far as ensuring positive positives, but off the top of my head it's all I can think.