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Staff Publications

Overview and History of Statewide Ballot Measures

Subjects
Elections & Redistricting
State Government
Published
12/16/2021

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 2021; and links to additional resources at the offices of the Colorado Legislative Council Staff and the Colorado Secretary of State.

Email addresses for the Colorado legislature have changed from the @state.co.us domain to the @coleg.gov domain on December 1, 2022. Details
The effective date for bills enacted without a safety clause (unless otherwise specified) is August 7, 2023. Details
The 2023 Ballot Information Booklet (Blue Book) is now available. Details