Electoral system
Electoral rules place limits on suffrage and candidacy. Most countries's electorates are characterised by universal suffrage, but there are differences on the age at which people are allowed to vote, with the youngest being 16 and the oldest 21 (although voters must be 25 to vote in Senate elections in Italy). People may be disenfranchised for a range of reasons, such as being a serving prisoner, being declared bankrupt, having committed certain crimes or being a serving member of the armed forces. Similar limits are placed on candidacy (also known as passive suffrage), and in many cases the age limit for candidates is higher than the voting age. A total of 21 countries have compulsory voting, although in some there is an upper age limit on enforcement of the law. Many countries also have the none of the above option on their ballot papers.
Compulsory voting
Compulsory voting is a generalised view that democratic election of governing representatives is the responsibility of citizens, rather than a right afforded citizens constitutionally to nominate representatives. Equating in kind to similar civil responsibilities such as taxation, jury duty, compulsory education or military service, voting in these democracies is regarded as one of the "duties to community" mentioned in the United Nations Universal Declaration of Human Rights. This view asserts that, by introducing an obligation to vote, all citizens governed by a democracy partake in the responsibility for the government appointed by democratic election. In practice, this appears to produce governments with more stability, legitimacy and a genuine mandate to govern, which in turn benefits all individuals even if an individual voter's preferred candidate or party is not elected to power.