Colorado Issue 3 was an initiated constitutional amendment on the 1966 ballot in Colorado, where it was approved.
| Colorado Issue 3 (1966)|
| Yes|| 293,771|| 52.90%|
Election Results via: The Colorado Legislative Council
Text of measure
The language that appeared on the ballot:
|| An Amendment to Article VI of the Constitution of the State of Colorado, concerning the Judicial Department, and providing for the selection tenure, removal or retirement of Justices of the Supreme Court and Judges of Other Courts of the State of Colorado.