Why is the New Zealand PM fighting for his political life?

With just months to go before New Zealand voters head to the polls, the prime minister, Christopher Luxon, has survived his second leadership spill in just four months. As flagging poll numbers, a sluggish economy and high-profile gaffes build pressure on Luxon, can the embattled leader retain his grip on power through November? The Guardian’s New Zealand correspondent Eva Corlett joins Reged…