Issues in relation to which referendums are optional at the national level
Azerbaijan
Answer
Any issue of national importance, except those excluded
Source
Constitution of the Republic of Azerbaijan:
http://azerbaijan.az/portal/General/Constitution/doc/constitution_e.pdfhttp://en.president.az/azerbaijan/constitution#BASIC RIGHTSElection Code of the Republic of Azerbaijan:
http://www.msk.gov.az/uploads/qanunvericilik/election_code_eng.pdf
Comment
Constitutional issues are subject of mandatory referendum.
