The nation on course to elect woman prime minister in landmark first
In the past twenty years, the country has had more than 10 prime ministers.
In fact, one expert compares assuming the country's top job to taking a "poisoned chalice".
However, what is the reason does the country keep changing prime ministers? This is partly because 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 within the party, rather than from opposition groups.
"Therefore inside the LDP there are intense conflicts within different factions - they all want their own faction to get the leadership position."
"Thus although you could be chosen as leader, the moment you're in power, you have dozens of people manoeuvring to try to remove you again."
Key Factors Behind Rapid Turnover
- Single-party rule limits external competition
- Internal factional rivalries fuel power struggles
- The leadership role is often described as a "cursed position"
- Political stability stays elusive despite financial power
