For most of the first seven decades after Federation, it was a marginal seat that frequently changed hands between the Australian Labor Party and the conservative parties. However, Labor has held it without interruption since a 1967 by-election, and since the 1980s it has been one of Labor's safest non-metropolitan seats. Presently, the Liberal Party need a near 13 percent swing to win it.[1]
Since 1984, federal electoral division boundaries in Australia have been determined at redistributions by a redistribution committee appointed by the Australian Electoral Commission. Redistributions occur for the boundaries of divisions in a particular state, and they occur every seven years, or sooner if a state's representation entitlement changes or when divisions of a state are malapportioned.[2]