It was based on the remnants of the Independent Political Labour League, the first real working-class party in New Zealand, formed in 1904–05.
While the IPLL had managed to elect one MP (David McLaren) to Parliament, it quickly began to collapse into disarray—internal disputes about the party's political alignment were a significant factor, as was poor organisation and coordination.
[2] It did not, however, represent the totality of the left-wing vote — the Socialist Party and various independent candidates had also attracted a certain amount of support.
In 1912, a "Unity Conference" was called, aiming to unite the diverse leftist factions.
The Socialists refused to attend, but a number of independent activists agreed to take part in discussions.