The Constitution of the Islamic Republic of Iran was adopted by the referendum in December 2nd and 3rd of 1979, and went into force replacing the Constitution of 1906. It has been amended once, on 28 July 1989. The constitution has been called a "hybrid" of "theocratic and democratic elements". Articles One and Two vest sovereignty in God; but article Six "mandates popular elections for the presidency and the Majlis, or parliament." However, main democratic procedures and rights are subordinate to the Guardian Council and the Supreme Leader, whose powers are spelled out in Chapter Eight (Articles 107112).