The Constitution of Armenia was adopted by a nationwide Armenian referendum on July 5, 1995. This constitution established Armenia as a democratic, sovereign, social, and constitutional state. Yerevan is defined as the state's capital. Power is vested in its citizens, who exercise it directly through the election of government representatives. Decisions related to changes in constitutional status or to an alteration of borders are subject to a vote of the citizens of Armenia exercised in a referendum. There are 117 articles in the 1995 constitution. On November 27, 2005, a nationwide constitutional referendum was held and an amended constitution was adopted. The constitution was amended again in a national referendum on December 6, 2015 that changed the political structure from a semi-pres