Prime Minister Gillard appears safe now but far from strong. The next opinion poll is due to be released on Sunday.
She says she will turn her mind to a reshuffle of her cabinet in the coming days and will announce the new line up.
But opposition leader Abbott has already put the government on notice.
He has mooted another motion of no confidence, having narrowly lost the one he moved against the government when the prime minister threw open her party's leadership on Thursday.
"I'm impatient to give our country good government because that's what the public wants," Abbott told ABC radio.
"We are no closer to strong and stable government," he also told the Nine television network.
"The only way we can get to strong and stable government is to hold an election as soon as humanly possible," he said.
All eight of the lawmakers who have resigned will remain in the parliament and said they will fight to keep the Labor Party in power. They have also pledged to support Prime Minister Gillard.
But in his resignation speech, Senator Carr noted the government's chances of re-election in September were slim.
"You don't have to be a great scholar to appreciate we have great challenges ahead," he told Sky News.
Carr, a member of the party's governing national executive said he has long taken the view that "social democratic parties around the world are increasing moving to the arrangement of direct election of the leader by a range of people, by members of the parliament and by members of the party."
Both Crean and elder statesman Ferguson have implored the prime minister to return to traditional labor values.
The Prime Minister was criticized within her party over her claim that Australia's 457 visa regime which gives skilled, sponsored workers the right to live and work in the country for defined periods was taking jobs from Australians.
In the wash-up, the Gillard is left with the mighty task of re-assembling a new cabinet, six months out of an election she is expected to lose, with the prospect of yet another no confidence motion.