Compulsory voting
Countries that have compulsory voting by law but do not enforce it:Although voting in a country may be compulsory, penalties for failing to vote are not always strictly enforced. In Australia and Brazil, providing a legitimate reason for not voting (such as illness) is accepted. In Argentina, those who were ill on voting day are excused by requesting a doctor to prove their condition; those over away from their voting place are also excused by asking for a certificate at a police station near where they are. Belgian voters can vote in an embassy if they are abroad or can empower another voter to cast the vote in their name; the voter must give a "permission to vote" and carry a copy of the eID card and their own on the actual elections.
Electronic voting by country
The Uniformed and Overseas Citizens Absentee Voting Act of 1986 requires states and territories to allow overseas military personnel and citizens to vote in federal elections. The Military and Overseas Voter Empowerment Act of 2009 amended this law to require delivery of ballots by at least one electronic means (email, fax, or web site). As of September 2016, submission of ballots is done by mail in 18 states; the other states and the District of Columbia allow submission by one or more of email, fax, or secure web site.