Lang was first elected to the New South Wales Legislative Assembly in 1913 and served continuously until 1946.

At the 1925 state election, Lang led Labor to victory, defeating the Nationalist Party led by Sir George Fuller.

The ministry covers the period from 17 June 1925 until 26 May 1927[1] when Lang was confronted with extended cabinet strife, centred on Albert Willis.

Lang gained the approval of the Governor to reconstruct the ministry subject to an early election, held in October 1927.

[2] The composition of the ministry was announced by Premier Lang on 17 June 1925 and covers the period up to 26 May 1927.