New Zealand Prime Minister Jacinda Ardern announced on Thursday she will resign next month.
"For me it's time," she said at a meeting of members of her Labour Party. "I just don't have enough in the tank for another four years."
Ardern, who became prime minister in a coalition government in 2017, then led her center-left Labour Party to a comprehensive victory in an election three years later, has seen her party and personal popularity drop in recent polls.
In her first public appearance since parliament went into its summer recess a month ago, she told Labour's annual caucus retreat that during the break she had hoped to find the energy to continue as leader, "but I have not been able to do that."
Ardern said the next general election will be held on October 14, and she would continue as an electorate MP until then.
Ardern said her resignation would take effect no later than February 7, adding that the Labour caucus would vote on a new leader on January 22.
