Birth tourism
Some countries do not allow their citizens to renounce their citizenship or only if the citizenship was acquired by birth there to non-citizen parents. In Argentina, Brazil, Ecuador, Peru, and Uruguay, voting is compulsory for citizens. In Bolivia, Brazil, Chile, Colombia, Cuba, Guatemala, Paraguay, and Venezuela, military service is mandatory.
Conscience vote
In most countries, conscience votes are quite rare and are often about issues which are very contentious, or a matter on which the members of any single party differ in their opinions; thus making it difficult for parties to formulate official policies. Usually, a conscience vote will be about religious, moral or ethical issues rather than about administrative or financial ones. Matters such as the prohibition of alcohol, homosexuality law reform and the legality of prostitution are often subject to conscience votes.