Colo. Const. art. VII, § 12
The general assembly shall, by general law, designate the courts and judges by whom the several classes of election contests, not herein provided for, shall be tried, and regulate the manner of trial, and all matters incident thereto, but no such law shall apply to any contest arising out of an election held before its passage.
Source: Entire article added, effective August 1, 1876, see L. 1877, p. 53.
Cross references: For regulation of contests of general, primary, and special elections, see part 2 of article 11 of title 1; for regulation of contests of municipal elections, see part 13 of article 10 of title 31.