Within the framework of EU enlargement, the population and housing census is a pre-condition for EU membership. The 2011 census in Croatia was conducted according to EU regulations and considering this, it should present a good example for the region. However, there are some aspects which are not addressed by EU regulations, but are of importance when looking at censuses in the Western Balkans: the so-called sensitive issues such as ethnicity, language and religion. Answers to these questions are not required by the EU; nonetheless all Western Balkan countries have included these questions in their censuses. In Croatia, the census results are used to determine political participation by proportional representation of ethnic minorities, and this has led to ethnic tensions .