The nation on course to elect woman prime minister in landmark first
Over the last two decades, the country has had over ten prime ministers.
In fact, one expert likens taking up the country's highest office to taking a "cursed cup".
However, what is the reason does the country frequently replace leaders? It's due in part 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 main political competition originates inside the party, rather than from opposition groups.
"Therefore inside the LDP there are vicious struggles within various groups - they all desire their own faction to get the top job."
"So even though 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."
Main Reasons Behind Rapid Turnover
- Single-party rule restricts outside challenges
- Internal factional rivalries drive power struggles
- The leadership role is often described as a "cursed position"
- Political stability stays difficult to achieve despite financial power
