|Election||Premier at election||Premier's party||Premier after election||Premier's party|
|WA 15 February 1936||Philip Collier||Australian Labor Party||Philip Collier||Australian Labor Party|
|WA 8 April 1933||James Mitchell||Nationalist Party||Philip Collier||Australian Labor Party|
|WA 12 April 1930||Philip Collier||Australian Labor Party||James Mitchell||Nationalist Party|
|WA 26 March 1927||Philip Collier||Australian Labor Party||Philip Collier||Australian Labor Party|
|WA 22 March 1924||James Mitchell||Nationalist Coalition (see notes)||Philip Collier||Australian Labor Party|
Loss of general election (Mitchell): Beginning of Collier's second period in office: 'The Mitchell coalition government was defeated at the election on 8 April 1933. The Labor caucus met on 19 April, re-elected Collier leader, and then chose the eight salaried Ministers and the one honorary Minister. The Ministers met on 21 April and agreed upon the distribution of portfolios among themselves. Mitchell resigned on 24 April and Collier was sent for', Hughes and Graham, p. 233 (see 'Sources', below). Collier became Premier of an Australian Labor Party majority government.
Change of party leader: 'Following the election in February 1936 caucus re-elected the ministry. Collier retired as party leader on 18 August 1936, and caucus elected Willcock as leader', Hughes and Graham, p. 233 (see 'Sources', below). Both Black's entry in the Australian Dictionary of Biography, in 'References', below, and Reid and Oliver, p. 112 (see 'Sources', below), suggest that health problems were a consideration in Collier's retirement.
References: For a study of the style of parliamentary politics at the time, see David Black, 'Factionalism and Stability, 1911-1947', in David Black (editor), The House on the Hill: A History of the Parliament of Western Australia 1832-1990, pp 97-151, (Perth: Western Australian Parliamentary History Project, Parliament of Western Australia, 1991, ISBN 0730939839).
Note also, R F Pervan, 'Cabinet and Caucus: Labor in Western Australia, 1933-1947', University Studies in History, [University of Western Australia], 5(1) 1967: 1-37.
Summary information on Western Australian premiers from 1890 to 1982 and a short essay, 'The Premiers -- An Introductory Comment', can be found in Reid and Oliver (see 'Sources', below).
For a survey of Collier's career, see David Black, 'Collier, Philip (1873 - 1948)', Australian Dictionary of Biography, Volume 8, pp 70-72, (Melbourne: Melbourne University Press, 1981), on line at:
Colin A Hughes and B D Graham, A Handbook of Australian Government and Politics 1890-1964, (Canberra: Australian National University Press, 1968, SBN 708102700); John Mandy and David Black (editors),The Western Australian Parliamentary Handbook Centenary Edition, (Perth: Parliamentary History Project, Parliament of Western Australia, 1990, ISBN 0731697847); G S Reid and M R Oliver, The Premiers of Western Australia 1890-1982, (Perth: University of Western Australia Press, 1982, ISBN 0855642149).