When the Premiers' Plan came up for a vote in South Australia, 23 of Labor's 30 House of Assembly members and two of Labor's four Legislative Council members voted for it.
In August 1931, the South Australian state conference of the Labor Party expelled all of the MPs who supported the Premiers' Plan, including Premier Lionel Hill and his entire Cabinet.
[3] Having soundly lost its majority, the PLP ministry stayed in office until the 1933 election with the support of the conservative opposition—the Liberal Federation to 1932 and the Liberal and Country League afterward.
Robert Richards briefly succeeded him as Premier, and led the party into the 1933 election.
Of the 23 MPs the party had going into the election, only five – Blackwell, McInnes, Pedler, and Richards in the House of Assembly, and Whitford in the Legislative Council, were reelected.