Just use the Swedish system, allow a few week of pre and mail voting, and election day is allways on a sunday.

Every citizen is automatically reigistered for voting, and get a voting card sent home, you send that in to mail vote or to pre vote with a sealed envelope with your ballots.

This means that you can even change your vote after mail or pre voting without compromising voter secrecy

I’ll take any extra holidays I can get. However, voting by mail is really the way to go. I used to be reluctant to vote, but mail ballots just make it too easy.