 In 1926 the riding was split into Cochrane North and Cochrane South.It was abolished in 1996 before the 1999 election.From the 1987 election until its abolition, the riding included most of the District of Cochrane (except Timmins, the geographic townships bordering Timmins on the west, Iroquois Falls, and all the communities and townships south of a line extending east from the northern boundary of Iroquois Falls to Lake Abitibi and then all communities and townships south of Lake Abitibi).