Japanese Prime Minister Shinzo Abe is on track to become the country's longest serving PM after a landslide leadership contest victory.
Abe won 553 votes out of a total 807, and it's predicted his six-year reign will be unchallenged until November 2019, where he will overtake early 1900s Prime Minister Taro Katsura as the longest serving.
Familiar to Australian politics today, the average lifespan of a Japanese Prime Minister in the aftermath of World War II was just two years.