Austria - 2007 Constitution

Title Article 23.a
Article

23.a

The members of the European Parliament shall in Austria be elected in accordance with the principles of proportional representation on the basis of equal, direct, personal, free and secret suffrage, be men and women who have completed their sixteenth year of life on the day of election and on the day appointed for election are either endowed with Austrian nationality and not excluded from suffrage under the provisos of European Union law or endowed with the nationality of another member state of the European Union and qualified to vote under the provisos of European Union Law.

Categories - Electoral party (Electoral rules/formula)
Source Source: Bundeskanzleramt (www.ris.bka.gv.at)