We regularly have 92% - 93% participation in federal elections here in Australia. Having one next weekend, and already record numbers of pre-poll votes.
It’s almost like elections are held on Saturdays and participation is compulsory.
Almost…
And those that don't vote have to show a very good reason, or pay a fine, or face gaol.
Correction: those that don't enter a polling station. What you do in there is up to you. You can cast a vote, spoil the ballot, cast a "donkey vote" (numbering the options in the order printed), leave the ballot empty, as long as it goes in the box.