David Seymour is pushing for New Zealand to adopt a four-year parliamentary term.
The ACT Party leader says in a longer term, select committees would be organised differently to ensure the opposition always has a majority there.
Political Commentator Peter Dunne says the government will soon put the issue to a referendum.
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Gavin Grey: UK correspondent on Labour's poor showing at the local elections
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Geoff Bertram: energy economist on the Greens calling for the Government to bring down power prices
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Shane Solly: Harbour Asset Management expert on the market reactions to the 'no deal' announcement on the Middle East conflict
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