The nation on course to choose woman prime minister in landmark first
In the past twenty years, Japan has seen more than 10 leaders.
In fact, one expert compares assuming the nation's top job to taking a "poisoned chalice".
But why does Japan frequently replace leaders? It's due in part of it being a "one-party democracy", says Professor James Brown of Temple University Japan.
The Liberal Democratic Party's control on the country's politics means the main political competition comes from inside the party, instead of from opposition groups.
"Therefore inside the LDP there are vicious struggles within various groups - they all desire their own faction to secure the top job."
"Thus although you could be chosen as leader, the moment you're in office, you have dozens of people manoeuvring to try to remove you again."
Key Factors Behind Frequent Changes
- One-party dominance restricts outside challenges
- Internal factional rivalries fuel leadership contests
- The leadership role is frequently called a "poisoned chalice"
- Government continuity stays elusive despite economic strength
