The nation set to choose woman prime minister in landmark first
Over the last two decades, Japan has had over ten prime ministers.
In fact, one expert likens taking up the nation's highest office to taking a "poisoned chalice".
However, what is the reason does Japan keep changing prime ministers? This is partly because of it being a "one-party democracy", says Professor James Brown of Temple University in Japan.
The Liberal Democratic Party's control on the country's politics means the primary rivalry originates inside the party, rather than from opposition groups.
"So within the LDP there are intense conflicts within various groups - they all desire their own clique to get the leadership position."
"So even though you could be chosen as leader, as soon as you're in office, you have many individuals scheming to try to get you out again."
Main Reasons Behind Rapid Turnover
- Single-party rule restricts outside challenges
- Party infighting drive power struggles
- The prime minister's position is often described as a "poisoned chalice"
- Government continuity stays elusive despite financial power
