Colo. Const. art. V, § 5 – Classification of senators.

The senate shall be divided so that one-half of the senators, as nearly as practicable, may be chosen biennially.

Source: Entire article added, effective August 1, 1876, see L. 1877, p. 38. L. 74: Entire section R&RE, p. 448, effective January 1, 1975.

Editor's note: The Governor's proclamation date in 1974 was December 20, 1974.