UPDATE 9.38am Senior minister and Kevin Rudd backer Chris Bowen has resigned from the Gillard government ministry.
Acknowledging his role in the failed leadership coup, Mr Bowen said he could no longer serve under the Prime Minister.
Mr Bowen plans to re-contest the marginal western Sydney seat of McMahon at the September election.
The seat will be key to any chance the ALP has of retaining power.
LABOR IN CRISIS
Yesterday's botched attempt to unseat Julia Gillard has claimed a host of Labor scalps, and there is speculation that more will follow.
After what turned out to be no challenge from Kevin Rudd, the consensus view seems to be that the former prime minister has done his dash.
As Labor counts the cost, senior party figures are imploring the Prime Minister to clean out her frontbench.
Supporters of Mr Rudd fear a purge after Ms Gillard sacked Simon Crean from the ministry for kick-starting the spill, and others resigned their positions.
All up, yesterday's events forced two Labor frontbenchers and three party whips out of their roles.
Key Rudd supporter Joel Fitzgibbon - who caused a frenzy of speculation on Wednesday with his comments regarding the leadership - said he would be stepping down from his role as chief whip.
Fellow whips Janelle Saffin and Ed Husic are also resigning from their roles, while Richard Marles has given up his parliamentary secretary positions.
Labor figures say this is the opportune time for Ms Gillard to clean out her ministerial team and ensure those who remain are loyal to her cause.
Defence Minister Stephen Smith said the uncontested spill was an emphatic endorsement of Ms Gillard's leadership and a number of people need to consider quitting - including some who sit on the frontbench.
"There are a range of people who need to seriously consider what they now do," Mr Smith said.
"They can reflect on their own conduct.
"They can reflect on their capacities to embrace entirely without reservation all of our efforts."
Ms Gillard, as she did after last year's leadership spill, declared yesterday that the leadership ructions were "completely at an end".
However, senior Labor Minister Bill Shorten says this time will be different.
"The whole team unanimously backed our captain," he said.
Mr Crean told 7.30 that he had , saying he did what he thought was in the best interests of the party.
"I'm surprised that Kevin Rudd didn't stand," he told interviewer Leigh Sales.
"I can't understand why all of this agitation would be on, including the need to bring it to a head, then for the pretender not to stump up.
"He should have run. There is no question about that. In my view there is no way he can countenance or credibly argue that his position should be taken seriously."
Mr Marles, who joined Mr Crean yesterday in making a public call for Mr Rudd to take on Ms Gillard, told Lateline he did not regret expressing his opinion.
"I obviously thought the way in which we should be putting our best foot forward was for Kevin Rudd to be contesting the leadership," he said.
"We are all members of a team - we are all a part of a collective.
"Sincere people can have different points of view - I had a different point of view, I made it clear, I don't resile from it."
Mr Marles said the uncontested leadership spill handed a decisive victory to the Prime Minister and the party now needs to draw a line in the sand.
Labor Senator David Feeney, who is a key support of Ms Gillard, declared the chance of a Rudd return "over".
"The idea of a Kevin Rudd prime ministership is over," he said.
"It's not a Pyrrhic victory; it's a decisive victory.
"This is an occasion where for the third time the Prime Minister has been decisively re-endorsed as Labor leader by the Caucus.
"It's a critical and successful re-election of our leader."
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