text: Estonia Every citizen has a personal identification code assigned since birth. Every citizen becomes automatically eligible to vote the day they turn 18. No special notifications are sent and voting is not compulsory. Everyone older than 16 who is a permanent resident (whether a citizen of Estonia, EU, or other) can vote in local elections depending on where they have registered their official residence.
  Finland
  Voter registration in Finland is automatic and based on the national population register. Each citizen is assigned an identification number at birth. Permanent residents are recorded in this register even if they are not citizens, and their citizenship status is indicated in the register. People in the register are legally obliged to notify the register keeper of changes of address. Changing the address in the register automatically notifies all other public bodies (for example the tax district for local taxation, the social security authorities, the conscription authorities) and certain trusted private ones (e.g. banks and insurance companies), making the process of moving residence very simple. Close to election time, the government mails a notification to registered persons informing them of the election and where and when to cast their votes. Only citizens may vote in national elections, but all residents may vote in local elections.
  Germany
  In Germany, there is no separate voter registration, as resident registration is compulsory.