Opposition Leader Tony Abbott is hoping Barnaby Joyce's move from the finance portfolio will help the coalition improve its economic credentials.
Senator Joyce was dumped from the finance portfolio by federal Opposition Leader Tony Abbott and replaced with Andrew Robb on Thursday.
The Queensland Senator said he would remain as the leader of the Nationals in the Senate and accepted the process was necessary to give the coalition the best chance of winning the next election.
I'm not one to drop my chin: Joyce
His new portfolios of infrastructure, regional development and water were crucial for the nation, he said.
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"The way I see it, it's like this, we have a chance to win an election and I want to make sure that we give that chance every chance," Senator Joyce told reporters in Perth on Thursday night.
"Today I realise we have a reshuffle and I'm fully on board with that because I want to make sure that I do the right thing by my nation and the right thing by my nation is to change this government, it truly is.
"I'm not one to drop my chin, I will keep fighting..." Senator Joyce continued his attack on the federal government's debt levels, the failed insulation program and the $16.2 billion school hall stimulus package.
"I know that I have to suffer the slings and arrows of outrageous fortune that is cast at me from Mr (Lindsay) Tanner but that is not going to stop my message against him," he said.
"He and Mr (Kevin) Rudd and Mr (Wayne) Swan are completely and utterly derelict in where they are taking our nation."
Asked if he could have done the job better after being criticised for a number of gaffes Senator Joyce said: "If were talking about using Ts when I should have used Bs then you know I throw myself at the mercy of the court and offer my apologies."
Mr Robb would have his full support, Senator Joyce said.
"I have no doubt that Andrew Robb is an extremely competent operator, I find him to be an extremely decent human being as well," he said.
"Andrew Robb was crucial in shining a light on how we dealt with the ETS and how ridiculous it was that we could be so conceited as a nation to think that we believe that we could singlehandedly, without the support of any other nation run it from a room in Canberra."
Senator Joyce says he's disappointed that a campaign has been waged within the coalition to remove him from the portfolio.
"I'm disappointed that we have to deal with this sort of continual movement by people on your own side who seem to have more intent on wanting to beat me than beat Labor," he said.
Abbott says Turnbull could return to front bench
Former opposition leader Malcolm Turnbull notably missed out on a portfolio in the reshuffle but Mr Abbott said his predecessor could be given a senior role if the coalition won the next election.
The millionaire MP was reportedly seeking a promotion.
