MM, I support the PM, not Bob Brown, although I have a lot of respect for him, so your point about what the majority want is fair enough.
I've previously posted about the polls being terrible for Labor, including when they first jumped for Mr Abbott. The narrowing in the polls isn't my main reason for saying that Mr Abbott might need to look over his shoulder, but just a confirmation of my opinion about the political winds ATM.
Some reasons to back up why I'm saying it's possible:
He's tried to destroy the PM, but hasn't succeeded (yet?)
He's showing many signs of inconnsistency. eg: His statement saying that supporting the IMF was "throwing good money after bad". He has now changed his mind. He does this regularly. If the PM does it, she's lying or backflipping. If Mr abbott does it, he's recalibrating or has had a re-think
His extraordinary stand on increased superannuation, supporting the extra expenditure, but rejecting the mining tax that will pay for it.
His decision to leave his Finance Shadow Minister out of the discussions about this.
His failure to harm the PM over the Qantas situation. While supporting Qantas and Mr Joyce might have played well with his conservative base, I don't think it went down well with most people. It gave the PM a chance to sound strong on 'Labor values' (whatever that is),
His relentless negativity can't be sustained for another 2 years.
His rejection of all revenue raising policies, but committing to vastly increased expenditure will (IMO) leave him very vulnerable on the economic front. His promise to sack 12,000 public servants to make up more than $70 billion is just a bit short of what's needed.
Most of all, his 'pledges in blood' to repeal the carbon tax, etc have backed him into a corner in the future.
I could go on, but I think the above points are reasonable to debate. I'm sure many will disagree, but I think some of Mr Abbott's colleagues are starting to ask some questions.
Just as the PM's colleagues will do if she can't continue improving.