The New Zealand prime minister, beset by poor polling and caucus leaks, said he used Tuesday's regular caucus meeting for a "good, honest discussion".
After a marathon partyroom debate, he emerged alongside his deputy Nicola Willis to announce he had been given support to stay on.
"I moved a formal motion of confidence in my leadership. That motion was passed, confirming what I have been saying: I have the support of my caucus as their leader," he told journalists in Wellington.
The party has not revealed a tally of the vote, undertaken by secret ballot.
Mr Luxon took the centre-right National party into government in 2023, winning the election and forming a coalition with the NZ First and ACT parties.
However, the former Air New Zealand chief executive has never been well-liked by Kiwis and both he and his party have bled support since.
A bombshell poll released by TVNZ on Sunday showed the coalition losing office to Labour if an election were held last week.
It had Mr Luxon as the preferred prime minister of just 16 per cent of respondents, also behind opposition leader Chris Hipkins.
With New Zealand off to the polls on November 7, Mr Luxon's failure to turn around his party's popularity has led to leaks and speculation on his support.
A NZ Herald report earlier in April suggested Mr Luxon "ghosted" his partyroom whip who was attempting to contact him to inform him of flagging support among his MPs.
In pointed remarks on Tuesday, Mr Luxon dismissed those reports as a "media soap opera" that Kiwis weren't interested in.
"Caucus has answered clearly and decisively. It has backed my leadership," he said.
"If the media want to keep focusing on speculation and rumour, I am not going to engage.
"That matter is now closed and i wont be commenting further on it."
