|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 first period in office: 'Following the March-April 1924 election Labor held a majority of seats. Mitchell resigned and Collier was commissioned', Hughes and Graham, p. 231 (see 'Source', below). Collier became the Premier of an Australian Labor Party majority government.
Loss of general election (Collier): 'Following the election on 12 April Collier remained in office while the Nationalist and Country parties agreed on their cabinet representation. ... On 22 Mitchell was re-elected leader at a Nationalist party meeting and on 23 April Collier resigned and Mitchell was commissioned', Hughes and Graham, p. 232 (see 'Sources', below).
References: On Collier's first period in office, see David Black, 'The Collier Government 1924-1930', University Studies in Western Australian History, [University of Western Australia], 3 (3), October 1959: 58-70. 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).
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).