New Zealand Prime Minister Christopher Luxon has survived a vote of confidence before a general election due in November, saying he has the full support of his ruling National Party.

Luxon had called for an "urgent" meeting with his National Party caucus on Wednesday to address "increased speculation about his leadership".

"I have the full support of our caucus… Our caucus is united, and it is determined to win this election," he told reporters after the meeting which lasted more than three hours.

Luxon had faced a second challenge to his leadership within four months, as support for him and his party remained weak amid sluggish economic growth and high unemployment at an 11‑year high of 5.6%.

Earlier this week, Luxon drew backlash after suggesting a possible referendum on the electoral system on live radio, without prior consultation with his party colleagues.

Earlier in the month, the 56‑year‑old former Air New Zealand boss snapped up New Zealand’s business community after a speech calling on small‑business owners to "be adult". He said the country’s businesses had a "parent‑child" mentality with the central government and relied too often on handouts. He later apologised and acknowledged many were going through tough times.

The former airline executive led his centre‑right party to victory in the 2023 elections, vowing to bring down the cost of living and reduce taxes. "My pledge to you is that our government will deliver for every New Zealander," he said then.

A 1News Verian poll published on Wednesday morning showed Luxon’s preferred prime minister rating slid to 17% – a new low for his time in office – but he remains ahead of all other candidates.

New Zealand will hold its next general election on 7 November.

For more details on the 2023 election victory, see the election results and for the upcoming election, view the polling information.