But he also said: ``If I ever had the opportunity to do some good for people or to save a life, I'd always take that option instead of warming a seat.''

Mr Farmer was asked is there were any such opportunities on the horizon that would see him leave politics.

``None at the moment,'' he said.

``I don't know what's going to happen tomorrow, next week, next year or 10 years from now but I'm aware that I only have a certain amount of time on this earth and I want to make the most of it.''

Mr Farmer might not have a choice but to leave politics at the next federal election.

NSW MLC and Liberal Party powerbroker Charlie Lynn said he doubted ``very much'' whether Mr Farmer had the numbers to win preselection again.

``You can't live in Mosman and expect to be elected in Macarthur,'' he said.

``That's the feedback I'm getting from everybody in the party.

``And that's a decision he made [to move] and he has to live with the consequences of that choice.''

Mr Lynn said he and his state colleagues had been in Opposition for 13 years.

``And we don't regard ourselves as warming seats,'' he said. ``You have to work your butt off to get re-elected.''

Nick Bleasdale, the Labor candidate for Macarthur in the last election, said the community had been abandoned by the Liberal Party.

``He should resign and go,'' he said of Mr Farmer. ``The party are more interested in their careers and their public profiles than the community's needs.''

Mr Bleasdale said if a byelection was to be held, he would nominate for Labor's preselection.

Mr Farmer suffered the state's biggest swing at the last election to hold on to the Macarthur electorate by just over 1 per cent.

This week he said his constituents could take his comments ``any way they wish''.

``If I get asked a straight question, and this is why I don't make a very good politician, I answer it in a straight way,'' he said. ``As far as I'm concerned, nothing's changed.

``Perhaps the only thing that's changed, instead of being so guarded in my own personal opinions, I'm just open and I'm just saying how it is.''