Perhaps we could get some advice from Afghanistan on how to run a proper election.
I kinda liked that indelible purple ink on the left thumb nail myself. If you truly used indelible ink, you could keep the multiple voters from voting more than once.
Besides, if everyone had to have a purple left thumb, it would be slightly difficult for the demoncrats to yell discrimination! The only people being discriminated against would be those who choose to not vote.