The nation on course to elect woman prime minister in landmark first
Over the last two decades, the country has had more than 10 leaders.
In fact, one expert compares taking up the nation's highest office to drinking from 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", explains Professor James Brown of Temple University Japan.
The LDP's grip on the country's politics means the main political competition originates inside the party, rather than from external parties.
"Therefore inside the LDP there are intense conflicts within various groups - they all want their own clique to get the top job."
"So even though you could be chosen as prime minister, the moment you're in office, you have many individuals scheming to try to get you out again."
Key Factors Behind Frequent Changes
- Single-party rule limits external competition
- Party infighting fuel power struggles
- The leadership role is frequently called a "poisoned chalice"
- Political stability stays elusive despite economic strength
