“The former Mormon and Helen Clark staffer is the youngest woman in history to lead New Zealand…..”
About Ardern’s prime ministerial announcement: https://www.theguardian.com/world/2017/oct/19/who-is-new-zealands-new-prime-minister-a-profile-of-jacinda-ardern
About the longest serving female prime minister, Helen Clark: https://nzhistory.govt.nz/people/helen-clark