With the election looming on September 14, Rudd would act only if there could be a smooth handover that maintained a facade of unity.
Yesterday that seemed as distant as ever.
There was no move on the leadership during a caucus meeting, which avoided seriously undermining the prime minister by deferring a vote on the leader's right to appoint the ministry until after the election.
Gillard has not backed down from her refusal to stand aside, meaning a challenge could only be settled by the bloodbath of a caucus vote either called by her or forced by a petition supported by one-third of Government MPs. Gillard will miss next week's caucus meeting to attend a state memorial service in Sydney for Hazel Hawke, the former wife of Labor icon Bob Hawke.
Rudd backers would now have to organise a petition and a leadership meeting before Parliament rises at the end of next week, its last session before the election.
Even if talk of a coup fizzles and MPs return to campaign in their electorates with Gillard as the still-unchallenged prime minister, the noise of leadership speculation will have drowned policy and Government efforts to regain control of the agenda.
As things stand, Opposition Leader Tony Abbott has to do little but stand aside and grin as Labor hands him government on a platter of its own making.