Naturalisation opens the door to greater active political participation. It alone ensures a formal and legal equality with Swiss citizens in both direct and indirect participation in democratic decisions. It indicates the willingness of the foreigners to integrate and of the host country to receive them. Naturalisation implies a type of identification and attachment to the host country, but it is nevertheless also dependent on its citizenship law. Naturalisation is an expression of successful civic integration, but also of a rather restrictive policy in this area in Switzerland.
From a demographic point of view, as well as to follow the integration process of population groups with a migration background, it is important to know how many people acquire Swiss citizenship, how many people possess a foreign citizenship in addition to Swiss citizenship, and what the most common modes of acquisition of Swiss citizenship are.