The nation set to choose female prime minister in landmark first
Over the last two decades, the country has seen over ten leaders.
Actually, one expert likens taking up the country's highest office 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 "one-party democracy", says Professor James Brown of Temple University Japan.
The LDP's grip on the country's politics means the primary rivalry comes from within the party, rather than from opposition groups.
"So within the LDP there are vicious struggles within various groups - they all want their own clique to secure the top job."
"So even though you could be selected as prime minister, as soon as you're in power, you have many individuals scheming to try to remove you again."
Key Factors Behind Rapid Turnover
- One-party dominance restricts outside challenges
- Party infighting drive power struggles
- The prime minister's position is frequently called a "poisoned chalice"
- Government continuity remains difficult to achieve despite economic strength