In parliamentary systems like New Zealand’s, it is the norm for leaders to step down when doing so may serve their party’s electoral prospects. In other political systems, leaving office early is rare.
Ms. Ardern maneuvered through one crisis after another but had less success confronting persistent challenges that have hobbled successive governments.
After the surprise had sunk in, speculation about her next move quickly began. The answer may lie in the priorities she professed before becoming prime minister.
New Zealand’s outgoing prime minister won global fame with youthful charisma and a frank, compassionate leadership style that carried her through crisis.