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.
Compulsory voting
Venezuela and the Netherlands are countries that have moved from compulsory voting to voluntary participation. The last Dutch compulsory election was in 1967. Turnout in the subsequent national poll decreased by around 20%. Venezuela saw a drop in attendance of 30% in 1993 once compulsion was removed.