Issues of sub-national referendums regulated at the national level

Bahrain
Answer
None
Source
BahrainConstitution
http://www.servat.unibe.ch/icl/ba00000_.html
Law by decree No 14 for 2002
Exercising Political Rights http://www.shura.bh/en/LegislativeResource/PoliticalLaw/Documents/Political%20Rights%20Law.pdf
Comment
No provision wasfound in this regard