The nation on course to choose female prime minister in landmark first
Over the last two decades, the country has had more than 10 prime ministers.
Actually, one expert likens taking up the country's highest office to taking a "poisoned chalice".
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 political landscape means the primary rivalry originates within the party, instead of from opposition groups.
"So within the LDP there are vicious struggles within different factions - they all desire their own faction to secure the top job."
"So even though you might be selected as prime minister, the moment you're in power, you have many individuals manoeuvring to try to remove you again."
Main Reasons Behind Rapid Turnover
- One-party dominance limits external competition
- Party infighting drive power struggles
- The leadership role is often described as a "poisoned chalice"
- Political stability remains elusive despite financial power