Former independent MP Rob Oakeshott will contest the NSW seat of Cowper at the July 2 federal election.
Mr Oakeshott retired as the MP for Lyne in 2013, having controversially supported Julia Gillard in minority government after the 2010 election.
His home town of Port Macquarie is now in the seat of Cowper, held by Nationals MP Luke Hartsuyker, who was dumped from the frontbench in Malcolm Turnbull's second reshuffle.
"I confirm I have nominated to be the federal member for Cowper in the 45th parliament," Mr Oakeshott posted on Facebook on Friday.
He said he did not think, in 2013, that he would ever return to politics.
But he had been disappointed over the past three years that disadvantage on the NSW mid-north coast had not been addressed and the parliament had failed to deliver tax reform and constitutional recognition of indigenous people.
"Over time, I realised I had more to give, and the politics was still in my blood," he said.
Mr Oakeshott said he would be open to Mr Turnbull forming a minority government in the event of a hung parliament.
"As prime minister, he would have first go in this process of forming government in the House of Representatives," he said.
"I would not block his efforts to do so, and would accept his phone call if he wanted to formalise something in more detail.
"I ask the community to remember that a prime minister is not only in office prior to an election, but also during and after.
"They therefore have the responsibility to lead on any process of negotiation, in the unlikely event that it may occur."
His nomination means all of the independent MPs who delivered the Gillard minority government are contesting the 2016 election.
Hinch, Hanson, draw places on senate ballot
Pauline Hanson will be hoping voters cast their eyes over the lower half of the Queensland senate ballot
paper when they go to the polls on July 2.
Pauline Hanson's The One Nation Party will sit in 24th position following a draw by the Australian Electoral Commission at midday on Friday.
The Australian Cyclists Party was drawn first, followed by the ALP in fourth position, the LNP in seventh and the Greens in 37th place.
Meanwhile Derryn Hinch's chances of winning a spot in the senate have been given a big boost with the media personality drawing top spot on the Victorian ballot paper.
Next to Mr Hinch's Justice Party will be independent David Collyer, with the Animal Justice Party in third place and Labor snaring fourth spot.
The coalition and Greens tickets have been drawn near the end of the 38-party ballot.
A record 151 candidates will contest the NSW Senate seats at the upcoming federal election, with the centrist Health Australia Party drawing the coveted first spot on the ballot paper.
The Liberal Democrats will appear fourth, while the Liberal-National coalition will appear sixth.
The ALP didn't fare as well in the Australian Electoral Commission draw on Friday, getting 14th place on the ballot.
Seniors advocacy group Mature Australia has drawn first spot on South Australia's Senate ballot paper, with Labor in second place.
The positions were drawn at random by the Australian Electoral Commission in Adelaide on Friday, with 64 candidates and 23 groups to run.
The Greens drew fourth spot, Nick Xenophon sixth and the Liberals eighth, with the Citizens Electoral Council rounding up the group list in 23rd spot.
