Japan on course to choose woman prime minister in landmark first
Over the last two decades, the country has had more than 10 prime ministers.
In fact, a specialist compares taking up the nation's highest office to taking a "cursed cup".
However, what is the reason does Japan keep changing leaders? It's due in part of it being a "single-party system", explains Professor James Brown of Temple University Japan.
The Liberal Democratic Party's control on the country's politics means the main political competition originates within the party, instead of from external parties.
"So within the LDP there are vicious struggles within various groups - they all want their own clique to get the leadership position."
"So even though you might be chosen as prime minister, the moment you're in office, you have many individuals scheming to try to get you out again."
Key Factors Behind Rapid Turnover
- One-party dominance restricts outside challenges
- Party infighting fuel leadership contests
- The leadership role is frequently called a "cursed position"
- Government continuity stays difficult to achieve despite economic strength
