The British government passed the Victorian Constitution Act in 1855. Hotham was convinced to hand his power over as soon as possible. Haines and three other council members were made government ministers with the job of organizing the change to self-government. Haines was appointed by Hotham to be the Chief Secretary of Victoria and act as Premier until the elections could be orgaized. He resigned when several of the ministers wanted the elections by secret ballot. He thought this would increase corruption and bribery. He was reappointed when the Council decided that it, not the ministers should make the decision. He was the Chief Secretary until the first election in November 1856. After the election, as a member of the new Legislative Assembly, Haines became Premier until his government was defeated in 1857 by a group led by Sir John O'Shanassy. The O'Shanassy government was soon defeated and Haines again became Premier. In 1858 he was defeated during arguments about how the electorates should be divided. 