139.1. A referendum on issues specified in Articles 3.2 and 153 of the Constitution of the Republic of Azerbaijan shall be considered invalid, if less than 25% of voters from the integrated voter list participate in the referendum.

139.2. The Central Election Commission shall invalidate the returns of a referendum in the following cases:

139.2.1. if voting results are considered invalid or when they are cancelled in more than two fifths of the referendum precincts, under the condition that the number of registered voters in the election precincts exceeds ¼ of all voters registered in the constituency;

139.2.2. on the basis of a court’s decision.