Staff Publications Overview and History of Statewide Ballot Measures in Colorado Subject: Elections & Redistricting General Assembly Published: December 16, 2025 Agency: Legislative Council Staff This memorandum provides an overview of the statewide ballot measure process; a summary of the measures approved or rejected by Colorado voters between 1880 and 2025; and links to additional resources at the offices of the Colorado Legislative Council Staff and the Colorado Secretary of State. View Document
