The nation set to choose female prime minister in landmark first
In the past twenty years, the country has seen over ten prime ministers.
In fact, one expert likens assuming the nation's highest office to taking a "poisoned chalice".
But why does Japan keep changing leaders? This is partly because of it being a "one-party democracy", says Professor James Brown of Temple University Japan.
The LDP's grip on the political landscape means the main political competition comes from 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 leadership position."
"Thus although you could be selected as leader, as soon as you're in office, you have many individuals manoeuvring to try to get you out again."
Key Factors Behind Rapid Turnover
- Single-party rule restricts outside challenges
- Internal factional rivalries drive power struggles
- The prime minister's position is frequently called a "cursed position"
- Political stability remains elusive despite financial power