The PM fired his defence minister after a leadership challenge
Prime Minister Christopher Luxon has fired his Defence Minister Chris Penk, saying Penk tried to take his job as leader of the National Party. Luxon announced the dismissal at a press conference on 12 August 2026. It happened just hours after an emergency meeting of National Party MPs where they voted on whether Luxon should stay as leader. He won that vote — the second time someone has tried to remove him this year.
Luxon confirmed he was still prime minister and party leader. He was flanked by senior MPs Nicola Willis, Mark Mitchell and Chris Bishop during his statement. Erica Stanford stood just behind the senior group, a detail people noticed because of rumours she wanted the top job. Luxon said afterwards he had the "full support of my caucus" (NZ Herald).
In New Zealand, political parties choose their own leader. If enough MPs in the party want a change, they can hold a vote called a confidence vote. If the leader loses, they are usually expected to step down. Luxon won, so he stays on.
According to Luxon, Penk was the one who launched the challenge. The Prime Minister's Office told RNZ its position was that Penk was challenging for himself, not on behalf of anyone else (RNZ). Chris Bishop, standing alongside Luxon, said rumours that Penk was "doing the numbers" — meaning gathering support — for him were "utterly incorrect." He said people do not launch leadership challenges on behalf of anyone else. Bishop also said there was no suggestion Penk was working on behalf of Stanford.
Penk had earlier denied any involvement in a challenge after Politik and the New Zealand Herald reported he was doing the numbers for a Stanford bid. On Tuesday evening, arriving in Wellington, Penk said he had confidence in Luxon and would support him in any vote. His public statement announcing he would not seek re-election did not address the allegations that he had launched a challenge.
The events moved quickly. Over the weekend, the National Party published its ranked list of candidates for the November election, with Penk placed 14th. Speculation about a challenge grew through the week, with Stuff.co.nz, RNZ and the Herald all running live coverage. A new poll published around the time showed National's support holding steady (The Spinoff). The emergency meeting was held on Wednesday, the confidence vote followed, and Luxon spoke to media that afternoon. Within hours, Penk was dismissed (NZ Herald).
Penk's old jobs have been given to other ministers. Paul Goldsmith takes on Defence, Veterans, Space, GCSB and NZSIS. Simon Watts was named Minister for Building and Construction. According to the Beehive website, Penk also held the Land Information portfolio before his removal; the verified reporting does not specify how that one has been reassigned.
Penk announced he would not seek re-election in the November election, hours after losing his portfolios. He said he had talked it over with his family and decided not to stand again as an MP. He noted he had served the community of Kaipara ki Mahurangi for nine years.
The challenge drew attention overseas. The Washington Post reported that Luxon survived a leadership vote prompted by a challenge from his defence minister less than three months before the general election (Washington Post). France 24, citing AFP, reported the challenge was brought by Penk, who had since been fired according to a statement from Luxon (France 24).
The NZ Herald reported Luxon had been facing challenges to his leadership amid flagging support from his own MPs in the period leading up to the vote (NZ Herald). Stuff.co.nz published an explainer on how removing a sitting prime minister works, noting that the prime minister is not automatically removed in such a scenario (Stuff).
The broader question for the National Party is how much damage this does heading into the November election. Luxon has framed the vote as settling the leadership question. Penk's departure from both the ministry and the caucus removes one source of tension, but the speed with which the challenge moved from media speculation to a confidence vote, and the Prime Minister's Office's willingness to name the challenger publicly, suggests the internal tensions have not been fully resolved. Bishop's pointed denial of any proxy element, and Stanford standing behind the senior MPs at the press conference, are details that will be watched closely in the coming weeks.
