This alliance won the 1932 election under Premier John Bracken's leadership, and the two parties had effectively become united by 1936.
On the left, the Independent Labour Party (ILP) formed an alliance with the national Co-operative Commonwealth Federation (CCF), and contested the election as the ILP-CCF.
The Conservative party, under its new leader, former federal Member of Parliament (MP) Errick Willis, finished a close second with sixteen.
A number of rural ridings, which had previously supported Liberal-Progressive candidates, shifted to the Conservatives or to Social Credit in this poll.
Former judge Lewis Stubbs, an independent leftist, received an astounding 24,805 votes on the first ballot, almost 20,000 more than his nearest competitor.
The second-place candidate, moreover, was James Litterick, the first openly declared communist to win election at the state or federal level in North America.
After the election, Bracken attempted to persuade Errick Willis to form a four-year alliance of the Liberal-Progressive and Conservative parties, so as to provide a stable government for the province.
The provincial impasse continued until August 13, when the Social Credit League unexpectedly announced that it would provide support to Bracken's government in the legislature.
He and CPC leader Tim Buck surrendered themselves to police in 1942 and spent time in the Don Jail, being released in 1942 or 1943.
Some say that he was a spy for the Royal Canadian Mounted Police, and that he was killed as a traitor during the war by other members of the Communist Party.