https://www.idea.int/data-tools/data...pulsory-voting
Ultimately we know we have to vote for someone or else the system will fall apart.
Not sure what falls apart when you remove the random votes by people that don't really care who wins and just cross anything or the first on the list. Look at the map and see how many countries on that list are strong democracies and apply compulsory voting. Australia is about the only stable democracy on it that practices such.