Prime Minister Julia Gillard has insisted that opinion polls were not the central focus of her government, reasserting too her earlier declaration that the Australian Labor Party will be led to the general election in 2013 by the incumbent Labor leader.

In a statement, Ms Gillard reminded that "government is about governing."

"It's about getting the big things done, the hard things done that set our nation up for the future, that make sure we're stronger and fairer in that future," Fairfax Media quoted the embattled Labor leader as saying on Wednesday.

She issued the remarks following another unsettling Newspoll survey on Tuesday that further pushed back the primary numbers of the ruling party against the Coalition, painting the likelihood that the Gillard Government will be swept from power in 2013.

The new survey set off fresh speculations that Ms Gillard will be replaced as a result of internal revolt within Labor, whose members reportedly fear of a resounding defeat with the present prime minister leading them through next year.

A number of Labor MPs have resurrected the thought of tapping anew Kevin Rudd for the Labor leadership but he was reportedly reluctant to launch a direct challenge against Ms Gillard following his defeat February this year.

It is understood that Mr Rudd will only accept a new leadership invitation with an overwhelming support from Labor, which would mean he would simply ease out Ms Gillard from the top post and serve out her remaining term as prime minister.

A snap election is out of the question, with key Labor figures viewing such move as political suicide in light of the high chances that the Coalition will win the sudden showdown, thereby easily handing the prime ministership to Opposition Leader Tony Abbott.

Yet apart from convincing Mr Rudd to lead again, Labor also needs to persuade independent MPs to switch their support to a different Labor prime minister, analysts said, following specific warnings from Tony Windsor and Rob Oakeshott that their agreement with Ms Gillard was not transferable to anyone.

The duo hinted too that they could force the fall of the government or prod for a snap election if Ms Gillard is unceremoniously replaced by any other Labor figure.

On her part, Ms Gillard called on Labor members to mull over the history of previous Labor governments, which "teaches us that the big reforms don't come easy."

"Our Labor history teaches us that if you want to make those big reforms, you've got to stick to your guns," asserted the prime minister.

"You can't afford to be obsessed by the opinion polls," she added.

In the event of a Rudd return, it will be a complete overhaul for Labor, media reports said, as key cabinet ministers such as Treasurer Wayne Swan and Communications Minister Stephen Conroy, pledged not to serve under Mr Rudd and resign if Ms Gillard is dumped.

It is rumoured that Mr Rudd would pick Bill Shorten as new treasurer following reports that the latter had decided to support the former PM this time after working against him in the past two leadership spills.