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, one expert likens taking up the nation's top job to taking a "cursed cup".
However, what is the reason does Japan frequently replace leaders? This is partly because of it being a "one-party democracy", explains Prof James Brown of Temple University in Japan.
The LDP's grip on the country's politics means the primary rivalry comes from within the party, instead of from opposition groups.
"Therefore inside the LDP there are intense conflicts within various groups - they all want their own faction to secure the leadership position."
"Thus although you could be chosen as leader, as soon as you're in power, you have many individuals manoeuvring to try to remove you again."
Main Reasons Behind Frequent Changes
- Single-party rule limits external competition
- Internal factional rivalries fuel leadership contests
- The leadership role is frequently called a "poisoned chalice"
- Political stability stays elusive despite economic strength
