The nation set to choose woman prime minister in landmark first
Over the last two decades, Japan has seen more than 10 prime ministers.
Actually, one expert compares assuming the nation's highest office to taking a "poisoned chalice".
But why does Japan frequently replace prime ministers? It's due in part of it being a "single-party system", 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 vicious struggles within various groups - they all desire their own faction to get the top job."
"So even though you might be selected as prime minister, as soon as you're in power, you have many individuals manoeuvring to try to remove you again."
Main Reasons Behind Rapid Turnover
- Single-party rule limits external competition
- Internal factional rivalries drive leadership contests
- The leadership role is often described as a "poisoned chalice"
- Government continuity stays elusive despite financial power
