However, in the European Union, one can vote in municipal elections if one lives in the municipality and is an EU citizen; the nationality of the country of residence is not required. In some countries, voting is required by law. If an eligible voter does not cast a vote, he or she may be subject to punitive measures such as a small fine. Compulsory voting is a system in which electors are obliged to vote in elections or attend a polling place on voting day.