| | | | Short Title | | Yes | | No | | Outcome | | Type of Change | |
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| Initiative |
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| 1974 |
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| 1970 |
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| | 1 | | An amendment to section 22 of article IV of the constitution of the State of Colorado, exempting the heads of principal departments establis | | 57% | | 42% | | Adopted | | Constitutional | |
| | 2 | | An amendment to article XII of the constitution of the State of Colorado, creating the Colorado state personnel system, providing therein fo | | 66% | | 33% | | Adopted | | Constitutional | |
| | 3 | | An amendment to articles XI, XIV, and XX of the constitution of the State of Colorado, relating to local government, and providing for home | | 65% | | 34% | | Adopted | | Constitutional | |
| | 4 | | An amendment to article VII of the constitution of the State of Colorado, reducing the minimum age and residency requirements of electors an | | 45% | | 54% | | Rejected | | Constitutional | |
| | 5 | | An amendment to article VII of the constitution of the State of Colorado, changing the residency qualification of electors, and providing th | | 64% | | 35% | | Adopted | | Constitutional | |
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| 1966 |
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| 1962 |
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| 1958 |
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| 1954 |
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| 1950 |
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| 1946 |
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| 1942 |
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| 1938 |
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| 1934 |
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