The nation set to choose woman prime minister in landmark first
Over the last two decades, Japan has had more than 10 leaders.
In fact, a specialist likens taking up the country's highest office to drinking from a "cursed cup".
However, what is the reason does the country keep changing prime ministers? It's due in part of it being a "one-party democracy", says Prof James Brown of Temple University in Japan.
The LDP's grip on the country's politics means the primary rivalry comes from inside the party, instead of from opposition groups.
"Therefore inside the LDP there are intense conflicts within various groups - they all desire their own clique to get the top job."
"Thus although you might be selected as leader, the moment you're in office, you have many individuals scheming to try to remove you again."
Key Factors Behind Rapid Turnover
- One-party dominance limits outside challenges
- Internal factional rivalries drive leadership contests
- The prime minister's position is often described as a "poisoned chalice"
- Government continuity stays elusive despite economic strength
