Japan on course to choose woman prime minister in landmark first
Over the last two decades, the country has had more than 10 leaders.
In fact, a specialist likens assuming the nation's highest office to drinking from a "poisoned chalice".
However, what is the reason does the country keep changing leaders? It's due in part of it being a "one-party democracy", explains Professor James Brown of Temple University in Japan.
The Liberal Democratic Party's control on the country's politics means the main political competition comes from within the party, instead of from opposition groups.
"So within the LDP there are vicious struggles within different factions - they all desire their own clique to secure the top job."
"Thus although you might be selected as prime minister, the moment you're in office, you have dozens of people manoeuvring to try to get you out again."
Key Factors Behind Frequent Changes
- Single-party rule restricts external competition
- Party infighting fuel leadership contests
- The leadership role is often described as a "cursed position"
- Government continuity remains difficult to achieve despite financial power
