Requirements for a referendum to pass

Law on Referendum (1995, last amended in 2008)

http://aceproject.org/ero-en/regions/asia/KZ/kazakhstan-constitutional-law-on-referenum-1995/view

Article 31. Summing up the results of the republicanreferendum

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2. Referendum shall be considered as valid, if morethan half of the citizens eligible to take part in the referendum have beenvoted.

3. Decision on a questions submitted to referendumshall be considered as adopted if as a result of voting it has been supportedby more than half of citizens, who have taken part in voting.

Additions and changes to the Constitution, submittedto the republican referendum, shall be considered as adopted if they have beensupported by more than half of citizens, who have taken part in voting at leastof two thirds of oblasts, the city of republican status and the capital.

Double majority is only for Constitutional amendments