Legal basis for direct democracy at the national level
Iran, Islamic Republic of
Answer
Constitutional
Source
Article 59 of the constitution provides for optional referendum.
Article 177 of the constitution provides for mandatory referendum.
Constitutionof the Islamic Republic of Iran
(Adoptedin 3 December 1979, 28 July 1989)
http://www.alaviandassociates.com/documents/constitution.pdf