The nation on course to elect female prime minister in historic first
Over the last two decades, the country has had over ten leaders.
In fact, a specialist compares taking up the nation's top job to drinking from a "cursed cup".
However, what is the reason does Japan keep changing prime ministers? This is partly because of it being a "one-party democracy", says Professor James Brown of Temple University in Japan.
The Liberal Democratic Party's control on the political landscape means the primary rivalry comes from within the party, rather than from opposition groups.
"Therefore inside the LDP there are vicious struggles within various groups - they all desire their own clique to secure the top job."
"Thus although you might be selected as leader, the moment you're in office, you have many individuals manoeuvring to try to remove you again."
Key Factors Behind Frequent Changes
- Single-party rule restricts outside challenges
- Party infighting drive leadership contests
- The prime minister's position is often described as a "cursed position"
- Government continuity stays elusive despite economic strength
