The Constitution of the State of Colorado is the foundation of the laws and government of the U.S. state of Colorado. The current, and only, Colorado State Constitution was drafted 1876-03-14, approved by Colorado voters 1876-07-01, and took effect upon the statehood of Colorado on 1876-08-01. From 1876 through 2007, the Colorado Constitution has been amended 152 times. The Constitution of Colorado provides and derives its authority from the sovereignty of the people and is the foremost source of state law. In addition to providing for voting, the people of Colorado have reserved initiative of laws and referendum of laws enacted by the legislature to themselves and provided for recall of office holders.