(Australia's unfair electoral system is a big problem here. The ALP got ~33% of the primary vote and is flirting with 50% of the seats. Meanwhile, the Greens got ~12%, and around 2% of the seats. This is what Australians call "fair").
Are there lessons for Aotearoa? Unlike Australia, both our government and our opposition have at least pretended to care about climate change, and there isn't the level of high profile abandonment - going on holiday during the bushfires, ignoring the floods - that has driven public anger about Scott Morrison. Unlike Australia, our politicians take their jobs seriously and understand basic public expectations. We also have a very different political system, which makes independent challenges to MPs unlikely (we haven't had an independent elected since 1943, and the highest-profile recent example - Raf Maji - managed a distant second). But with MMP, if Labour is seen as not performing or being an impediment on climate change, people can and will just switch their vote to the Greens to shift the policy balance, and that seems like something that could happen next year. Underperformance by a future National government doesn't have such an easy outlet, however - which is probably something they rely on.