A constitutional law was needed because the Constitution does not provide for advisory referendums .
Allows for an advisory referendum to be called on the question of transforming the European Communities into a European Union and of allowing the European Parliament to draft a European Constitution .
A constitutional law was needed because the European Constitution does not provide for advisory referendums .
Allows for an advisory referendum to be called on the question of transforming the European Communities into a European Union and of allowing the European Parliament to draft a European Constitution .