The tide turned, however, as many Kiwis began to chafe against the many Covid restrictions - and the seeming inability of her Government to deliver on many of the big dreams they announced.
Now, she is stepping down. After five and a half years in office, she is leaving as suddenly as she arrived. But unlike Andrew Little, who made way for her just seven weeks before the 2017 election, Ardern leaves her party in better shape. When she says she is leaving not because she thinks Labour will lose this year, but rather because she thinks it will win, she should be believed.
Sir John Key said much the same when explaining his decision to step down after eight years. Polls were giving his party every reason to expect a fourth term and he knew he did not want to do another three years. Ardern said yesterday, “Having reflected over summer, I know I no longer have that bit extra in the tank to do the job justice. It’s that simple.”
It probably is. But New Zealand’s successful Prime Ministers have usually lasted eight or nine years. There must be a suspicion that the spread of social media and the kind of political invective it propagates have added greatly to the stress of the office. Extreme vehemence against her can be heard in some parts of the country and she will have heard it too.
For once, the wish “to spend more time with my family” can be believed too. To have a Prime Minister give birth while in power was another point of pride for New Zealand but it cannot have been easy to find time for an infant. Now she will have time with Neve before she starts school, and time for a wedding.
She can be proud of her five years leading New Zealand and at 42 has much more to offer.