Barnaby Joyce has again defended his decision not to quit parliament immediately and recontest his seat when he found out he had New Zealand citizenship.
On Saturday he said thinking politically, he would have preferred to go straight to the polls.
However, he said he took on board the advice of the Solicitor-General rather than go to what could have been an unnecessary by-election.
"They say, 'we think you are pretty well right' there's no point putting your electorate through a by-election and the costs involved if you don't need to," he told the Nine Network on Sunday.
The High Court on Friday ruled he was ineligible for election because he held New Zealand citizenship by descent from his father at the time.
He quickly renounced the citizenship and will now contest the seat of New England he's held since 2013 to return to parliament at a by-election on December 2.
The Nationals leader says he'll be focused on New England for the next five weeks.
"I am going to do my very best on their behalf to make sure I will continue the delivery that we have seen here in New England."
But one of those opponents will not be former independent MP Tony Windsor, who on Friday said he would not contest the poll.
Acting Opposition Leader Tanya Plibersek said Labor would stand a candidate in the by-election, but did not expect to win.
