Japan set to elect woman prime minister in historic first
Over the last two decades, the country has seen more than 10 leaders.
In fact, one expert likens taking up the nation's highest office to taking a "cursed cup".
But why does the country frequently replace leaders? This is partly because of it being a "one-party democracy", says Prof James Brown of Temple University in Japan.
The LDP's grip on the political landscape means the primary rivalry comes from within the party, rather than from external parties.
"Therefore inside the LDP there are vicious struggles within various groups - they all desire their own clique to get the top job."
"Thus although you could be chosen as prime minister, the moment you're in office, you have many individuals manoeuvring to try to remove you again."
Key Factors Behind Frequent Changes
- Single-party rule restricts outside challenges
- Internal factional rivalries fuel power struggles
- The prime minister's position is often described as a "poisoned chalice"
- Political stability stays elusive despite economic strength
