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.
Canvassing
Originating in the United Kingdom, canvassing is most widespread in those countries that have borrowed from the British political system. It is standard practice in elections in Ireland, the United States, Canada, Australia, and New Zealand. In India, despite the million or more voters in many constituencies, parties have made the effort to have canvassers visit the door of each house in each village.