The nation on course to elect female prime minister in landmark first
Over the last two decades, Japan has had more than 10 prime ministers.
In fact, a specialist compares taking up the country's top job to drinking from a "cursed cup".
But why does Japan frequently replace leaders? This is partly because of it being a "one-party democracy", explains Professor James Brown of Temple University Japan.
The LDP's grip on the country's politics means the primary rivalry originates within the party, instead of from opposition groups.
"Therefore inside the LDP there are intense conflicts within different factions - they all want their own faction to secure the leadership position."
"So even though you might be chosen as prime minister, the moment you're in power, you have dozens of people manoeuvring to try to get you out again."
Main Reasons Behind Rapid Turnover
- Single-party rule restricts external competition
- Internal factional rivalries fuel power struggles
- The leadership role is frequently called a "cursed position"
- Government continuity remains difficult to achieve despite economic strength
