Registration for Austrian citizens living abroad – electoral roll and/or European electoral roll https://www.wien.gv.at/english/e-government/documents/elections/registration-austrian-citizens-abroad.html
As an Austrian citizen with your primary residence abroad, you can be registered in the electoral roll and/or European electoral roll. Registration in the electoral roll and/or European electoral roll allows you to vote in parliamentary elections, presidential elections and/or European elections.
of the last municipality in Austria you had your primary residence in or, if you have