Prime Minister John Key has resigned.
He made the announcement at an news conference at Parliament on Tuesday afternoon.
"Being leader of both the party and the country has been an incredible experience. "
He spent much of his announcement re-counting his and his government's achievements over the past eight years.
He cited pressure on his family as one of the reasons for stepping down.
"Throughout these years I've given everything to this job, the job that I cherish and for the country I love.
All of this has come as quite some sacrifice for the people who are dearest to me - my family. For my wife Bronagh, there have been many nights where she was alone, many occasions that were important to her that I simply couldn't attend."