tatutes. From 1877 to 1878, he had to give up practicing law to serve as governor of Arizona Territory. On June 8, 1878 Hoyt was appointed to replace Mason Braymen as governor of Idaho Territory. Braymen had been charged with mishandling affairs during the Nez-Perce War, but because Hoyt was not convinced the fallen governor had done anything improper, he took it upon himself to investigate the charges before taking office. After concluding that Braymen had been wrongly charged, Hoyt wrote the President and declined the appointment. As a result, Braymen stayed on as governor and Hoyt was appointed associate justice of the Supreme Court of Washington Territory. He began his Supreme Court appointment in February 1879 and when his first term expired, every practicing attorney in his twelve-county district petitioned President Arthur to reappoint him. Hoyt stayed on as associate justice until 1887. In May of that year, he moved to Seattle, where he managed the territory's largest banking house and later served as president of Washington's constitutional convention. After Washington became a state, he was appointed justice of the State Supreme Court, where he served from 1889 until 1897. From 1898 to 1902, he served on the Board of Regents at the University of Washington, where he later taught law from 1902 to 1907.