alt Hacker NewsYou can do A' in some US states... you can vote by mail/early vote, and then later request they spoil that ballot and do it again, or by voting on election day the mail-in is invalidated.
You can do A' in some US states... you can vote by mail/early vote, and then later request they spoil that ballot and do it again, or by voting on election day the mail-in is invalidated.
The US voting system is probably not a good starting point for modeling such systems :)