[infamouscow]

Yes, voting is compulsory (required by law) in Brazil. Citizens can also cast a null/blank ballot if they feel that the candidates on the ballot should not be elected. Despite this, only 76% of citizens actually voted in the last presidential election. 69% of the population voted for one of the candidates, only 7% voted null/blank. [1]

1: https://en.wikipedia.org/wiki/Brazilian_general_election,_20...

[cesarbs]

You have the option to justify your absence if you can prove that you weren't close to a place where you can vote. That is my case.