| | | | Short Title | | Yes | | No | | Outcome | | Type of Change | |
| 1928 |
| |
|
| |
| | 4 | | Providing for a $60 million bond issue for the construction of highways | | 32% | | 67% | | Rejected | | Constitutional | |
| | 6 | | Providing for the election of a state board of education and for the appointment by the board of a Commissioner of Education to replace state Superintendent of Public Instruction | | 34% | | 65% | | Rejected | | Constitutional | |
|
| Referendum |
| |
| | 1 | | Giving General Assembly power to fix salaries of the Governor, Secretary to the Governor, Justices of the Supreme Court, and district court judges | | 53% | | 46% | | Adopted | | Constitutional | |
| | 2 | | Requiring payment of ad valorem tax on real property a qualification for voting on school bonded indebtedness | | 30% | | 69% | | Rejected | | Constitutional | |
| | 3 | | Amending eminent domain provisions to facilitate better city planning and zoning | | 16% | | 83% | | Rejected | | Constitutional | |
| 1926 |
| |
|
| |
| | 6 | | Amending law to address the ability of dentists licensed in other states to practice in Colorado without examination | | 23% | | 76% | | Rejected | | Statutory | |
| | 7 | | Creating a public utilities commission and prescribing its powers and duties | | 17% | | 82% | | Rejected | | Constitutional | |
| | 8 | | Concerning the taxation of petroleum products and registration of motor vehicles, and providing that all such taxes and fees be used exclusively for roads | | 35% | | 64% | | Rejected | | Statutory | |
|
| |
| | 1 | | Giving General Assembly power to fix salaries of the Governor, Secretary to the Governor, Justices of the Supreme Court, and district court judges | | 47% | | 52% | | Rejected | | Constitutional | |
| | 2 | | Giving General Assembly power to fix salaries of county and precinct officers, such salaries not necessarily to be paid only from fees collected | | 33% | | 66% | | Rejected | | Constitutional | |
| | 3 | | Giving General Assembly power to enact laws for motor vehicle registration taxes and fees in lieu of ad valorem taxes | | 33% | | 66% | | Rejected | | Constitutional | |
| | 5 | | Giving General Assembly power to provide for manufacture and sale of intoxicating liquors for intrastate use, subject to U.S. Constitution | | 41% | | 58% | | Rejected | | Constitutional | |
| 1924 |
| |
|
| |
| | 1 | | Establishing the office of state printer and printing building committee | | 12% | | 87% | | Rejected | | Constitutional | |
|
| |
| | 2 | | Providing for the creation of a bond issue to pay bonus to soldiers and sailors | | 43% | | 56% | | Rejected | | Constitutional | |
| | 3 | | Giving General Assembly power to fix salaries of state officers | | 34% | | 65% | | Rejected | | Constitutional | |
| 1922 |
| |
|
| |
| | 1 | | Authorizing $1.5 million bond issue for construction of public highways | | 66% | | 33% | | Adopted | | Constitutional | |
| | 2 | | Creating a Public Utilities Commission, prescribing its powers and duties, and defining public utilities | | 41% | | 58% | | Rejected | | Constitutional | |
| | 3 | | Revising apportionment of members of the General Assembly | | 37% | | 62% | | Rejected | | Statutory | |
| | 4 | | Giving General Assembly or people power to exempt certain intangibles from ad valorem taxation and to impose an income tax in lieu thereof | | 26% | | 73% | | Rejected | | Constitutional | |