Quorum requirements for a referendum to be valid

Constitutional Law onReferendum 

(Enacted in 1995)

http://www.legislationline.org/documents/id/6770

(Official English Translation)

Article 31.Summarising results of referendum.

Referendum isconsidered to have not taken place if less than half of citizens of therepublic who have suffrage took part in voting. In this case, referendum on thesame issue can be conducted again not earlier than in two years.

Decisions on issuesproposed for referendum is considered adopted, including those on changes andadditions to the Constitution of the Republic of Tajikistan, if more than halfof citizens of the Republic that took part in referendum voted for adopting thechanges.

50% of citizens