Collie-Preston is a Legislative Assembly electorate in the state of Western Australia. While the seat was known as Collie for just over a century of its existence as an electorate, the seat was known as South West Mining from 1901 to 1904, and Collie-Wellington from 2005 to 2008. It is named for the South West coal mining town of Collie. While historically a very safe seat for the Labor Party, redistributions in 1988 and 2007 due to increases in the quota for country seats which had historically been malapportioned resulted in the seat incorporating surrounding rural shires which were hostile to Labor and thereby becoming more marginal. History Collie was originally created as the seat of "South West Mining" in the Constitution Act Amendment Act 1899, the last redistribution of seats to require a modification of the Constitution. It was first contested at the 1901 election. The district in 1900 consisted of three non-contiguous parts: one centred on the Collie coalfields, one centred on the Greenbushes tinfields, and one centred on the Donnybrook goldfields. In 1904, it was renamed "Collie" with almost no changes to its boundaries. In the Redistribution of Seats Act 1911, its boundaries were so unusually contorted by the then-Liberal government, which was accused of trying to lock Labor votes in Premier Frank Wilson's marginal seat of Sussex behind Collie's boundaries, that the Kalgoorlie Miner and other newspapers used the seat's map as an effective mascot for the bill. However, the boundaries remained unchanged until a later redistribution ahead of the 1930 election. The seat changed hands three times between the Liberal member John Ewing and his Labor rivals, but the seat was securely Labor from the 1908 election and for 81 years continuously remained a Labor seat, with only three members during that time—Arthur Wilson until 1947, then Harry May until 1968 and Tom Jones until 1989. In 1986, the seat had 9,410 enrolled voters compared with an average of 13,796 statewide and over 28,000 in some metropolitan electorates such as Joondalup and Murdoch. The Burke Labor government's Acts Amendment (Electoral Reform) Act 1987, passed with National Party support, increased metropolitan representation from 29 to 34 out of 57 seats, and the 1988 redistribution which resulted in Collie gaining parts of Dale and Warren combined with a significant statewide swing against the Labor Party delivered the seat to the Nationals' Dr Hilda Turnbull, who held the