Well just from the limited sample size of previous mail in ballot elections held on smaller scale in the US fraudulent entries run rampant. That's not even counting the ones that are just discarded. Here's a good article from the New York Times in 2012 about how bad mail in voting/absentee voting works: nytimes . com/2012/10/07/us/politics/as-more-vote-by-mail-faulty-ballots-could-impact-elections.html We're talking hundreds of thousands to millions of votes discarded, lost, or not accepted because of the failure to follow instructions. I don't think is a good idea is to try and change or create a completely new system when the old one has worked provably just fine for a while.

Mine was though.

For reasons of survival they're more likely to instate a military like society with a clear chain of command and with one person in charge with final say. Once it's reach a certain level of safety and population they'll likely move to a more democratic type government

Or taking a nap.