In April 1973, anti-Chogyal agitation broke out and protestors demanded popular elections. The Sikkim police were unable to control the demonstrations, and Dorji asked India to exercise its responsibility for law and order and intervene. India facilitated negotiations between the Chogyal and Dorji, and produced an agreement, which envisaged the reduction of the Chogyal to the role of a constitutional monarch and the holding of elections based on a new ethnic power-sharing formula. The Chogyal's opponents won an overwhelming victory, and a new Constitution was drafted providing for Sikkim to be associated with the Republic of India. On 10 April 1975, the Sikkim Assembly passed a resolution calling for the state to be fully integrated into India. This resolution was endorsed by 97 percent of the vote in a referendum held on 14 April 1975, following which the Indian Parliament amended the constitution to admit Sikkim into India as its 22nd state.