Parliamentary procedure
The three opposition leaders had agreed to delay the tabling of the no-confidence motion until the 24th, to ensure that a conference between the government and aboriginal leaders scheduled on the 24th would not be disrupted by the campaign. Parliamentary procedure dictated that the vote be deferred until the 28th. Even if the opposition hadn't put forward the non-confidence motion, the government was still expected to fall—there was to have been a vote on supplementary budget estimates on December 8, and if it had been defeated, loss of Supply would have toppled the Liberals.