Troy Buswell has declared he has no desire to lead the Liberal Party and cannot imagine any circumstance in which he will become premier of WA.
Mr Buswell, whose stunning political rehabilitation continued when he was reinstated 11 days ago as Treasurer by Premier Colin Barnett, also said he worried the intense focus on his personal life could deter other qualified people from entering politics.
Less than 24 hours after he was sworn in as Treasurer on Saturday, Mr Buswell last night flew to Canberra with WA Treasury officials for meetings today with the Greiner-Brumby GST review.
Mr Buswell will make WA's final submission to the review, arguing that a fairer deal for the State on the GST carve-up is in the nation's economic interest.
In an interview with _The West Australian _ on the eve of his departure, Mr Buswell said he was aware people might hold "strong views" about him after his highly publicised string of scandals.
These include the infamous chair-sniffing and bra-snapping incidents when he was in Opposition and an affair with Fremantle MP Adele Carles that cost him the treasury portfolio in 2010.
"Personally, I think I've got a pretty thick hide as an individual," Mr Buswell said.
"I'm personally not that worried about what people say and what their views are. But I do have a family and that worries me.
"But I also talk to other people who are thinking of going into politics. It's not the easiest job you could possibly want.
"And so I think we have to be careful not to create an environment where we create a disincentive for people who may otherwise consider a career in politics."
Former treasurer Christian Porter's announcement last month that he would quit State politics for a tilt at the Federal seat of Pearce not only cleared the way for Mr Buswell's return as treasurer but also led political observers to conclude the Vasse MP was Mr Barnett's logical and only successor.
Mr Buswell does not share that belief. "It's not something I have any desire (to do). I've been leader of the Liberal Party," he said.
"To be premier, you have to be leader of the Liberal Party in a conservative government.
"I won't be the leader of the Liberal Party again."
Asked if he was ruling out leading the party, Mr Buswell said: "I've had my time in that role. It was very interesting. I can't imagine that circumstances would present where I would do that again."
Asked if that was because he would not have the support of his colleagues, or because he did not want the job, Mr Buswell said: "It's my personal view. I haven't spoken to anyone about it, I wouldn't speak to people about it.
"I am in this role to support the Premier. I hope he remains as Premier for a long time to come."
Mr Buswell said media reporting on the private lives of politicians could be "a legitimate conversation" if their private conduct affected the capacity do their jobs.
"But that's something that I can't control in terms of what the media choose to focus on," he said.
"All I can do personally is to do the job to the best of my capacity."
Asked if he thought the focus on his personal life had been legitimate, Mr Buswell said he would "leave that for others to comment on".
"What's happened has happened, what's been reported has been reported," he said.