Requirements for a referendum to pass

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.

Decisionson issues proposed for referendum is considered adopted, including those onchanges and additions to the Constitution of the Republic of Tajikistan, ifmore than half of citizens of the Republic that took part in referendum votedfor adopting the changes.