Japan set to choose woman prime minister in landmark first
Over the last two decades, the country has seen over ten leaders.
In fact, a specialist compares taking up the country's highest office to taking a "cursed cup".
But why does the country keep changing leaders? This is partly because of it being a "one-party democracy", says Prof James Brown of Temple University Japan.
The Liberal Democratic Party's control on the political landscape means the main political competition originates inside the party, instead of from opposition groups.
"So within the LDP there are intense conflicts within various groups - they all want their own clique to secure the leadership position."
"Thus although you could be chosen as prime minister, the moment you're in office, you have dozens of people manoeuvring to try to get you out again."
Key Factors Behind Frequent Changes
- Single-party rule restricts external competition
- Internal factional rivalries drive leadership contests
- The prime minister's position is frequently called a "cursed position"
- Political stability remains difficult to achieve despite economic strength
