The
electoral district of Doncaster was split off from Box Hill and created in 1976 due to population growth. A redistribution of electorate boundaries in 1991 abolished the Balwyn electorate and incorporated most of it into Box Hill. A large part of the Box Hill electorate (with 17,290 electors) was also transferred to
Mitcham. These changes took effect at the
1992 Victorian state election. For the 2014 election, the boundaries of Box Hill moved eastwards. Balwyn North was moved to the electorate of Kew and part of Surrey Hills were moved to Burwood and Hawthorn. The former electorate of Mitcham was abolished so Blackburn, Nunawading and part of Forest Hill were moved into Box Hill. The Liberal margin in Box Hill was estimated to fall from 13.8 percentage points to an estimated 9.4. ==Members for Box Hill==