The Idaho Constitution was adopted on August 6, 1889 by a constitutional convention. It was ratified in a statewide vote of the people in November 1889. On July 3, 1890, the United States Congress approved the ratified constitution and accepted Idaho as a state. The Idaho Constitution includes twenty-one articles. Eventhough, it has been amended over one hundred times, the Constitution has never undergone a major revision.
Two ways in which the constitution can be altered are established under Article XX of the Idaho Constitution such as:
- legislatively-referred constitutional amendments, or
- constitutional conventions.