Compulsory voting
Compulsory voting is increasingly resented by citizens in some countries such as Brazil, the largest country where compulsory voting is enforced: at the last presidential election in 2014, some 30 million voters, about 21% of registered voters, did not vote, despite the fact that Brazil has some of the most severe penalties enforced against non voters.
Voter turnout
Sanctions for non-voting behaviour were foreseen sometimes even in absence of a formal requirement
to vote. In Italy the Constitution describes voting as a duty (art. 48), though electoral participation is not obligatory. From 1946 to 1992, thus, the Italian electoral law included light sanctions for non-voters (lists of non-voters were posted at polling stations). Turnout rates have not declined substantially since 1992 in Italy, though, pointing to other factors than compulsory voting to explain high electoral participation.