The nation set to choose woman prime minister in historic first
Over the last two decades, the country has seen more than 10 prime ministers.
In fact, one expert likens taking up the nation's highest office to drinking from a "cursed cup".
However, what is the reason does the country keep changing prime ministers? This is partly because of it being a "single-party system", explains Professor James Brown of Temple University in Japan.
The LDP's grip on the country's politics means the main political competition comes from inside the party, instead of from external parties.
"So within the LDP there are intense conflicts within various groups - they all want their own faction to secure the leadership position."
"So even though you could be chosen as prime minister, the moment you're in power, you have many individuals scheming to try to remove you again."
Main Reasons Behind Frequent Changes
- Single-party rule limits outside challenges
- Party infighting drive leadership contests
- The prime minister's position is often described as a "cursed position"
- Political stability stays difficult to achieve despite economic strength
