The nation set to elect woman prime minister in landmark first
Over the last two decades, the country has had over ten prime ministers.
In fact, a specialist likens taking up the country's highest office to drinking from a "poisoned chalice".
But why does Japan frequently replace leaders? It's due in part of it being a "single-party system", says Professor James Brown of Temple University Japan.
The LDP's grip on the political landscape means the main political competition comes from inside the party, instead of from external parties.
"So within the LDP there are vicious struggles within various groups - they all want their own faction to get the leadership position."
"Thus although you could be selected as prime minister, the moment you're in office, you have many individuals scheming to try to get you out again."
Main Reasons Behind Rapid Turnover
- Single-party rule limits outside challenges
- Internal factional rivalries drive leadership contests
- The leadership role is often described as a "poisoned chalice"
- Government continuity stays elusive despite economic strength
