The Colorado Property Annexation by Counties and Cities Amendment, also known as Measure 1, was on the November 4, 1974 ballot in Colorado as an initiated constitutional amendment, where it was defeated. The measure prohibited the "striking off" of any territory from a county without first submitting the question to a vote of the qualified electors of the county.
| Colorado Measure 1 (1974)|
| Yes|| 409,174|| 58.35%|
Election results via: The Colorado Legislative Council
Text of measure
The language appeared on the ballot as:
|| An act to amend Articles XIV and XX of the Constitution of the State of Colorado, concerning the annexation of property by a County or City and County, and prohibiting the striking off of any territory from a County without first submitting the question to a vote of the qualified electors of the County and without an affirmative vote of the majority of those electors.