“ All of them rest upon the assumption that the supreme court of Colorado held that article 20 of the state Constitution, particularly §§ 2 and 3, were repugnant to the provision of the Constitution of the United States guaranteeing to every state a republican form of government and to the act of Congress known as the Colorado enabling act, and that by such ruling rights possessed by the people of the state of Colorado and rights vested in the people of the city and county of Denver were invaded. ”