What is all the fuss? Everyone knows when election day is, same as April 15. Just mail it in time to get it postmarked on time, not a problem.
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I believe the problem is that the ballots are already pre post marked, so everyone can keep voting after the election.
Mail in ballots should have a cut off postmark date 2 weeks before the election for processing. Results should be announced on Election day along with the rest. My vote is in the mail is not an excuse.