The nation on course to choose woman prime minister in landmark first
Over the last two decades, Japan has had more than 10 prime ministers.
In fact, one expert compares taking up the country's highest office to drinking from a "cursed cup".
However, what is the reason does Japan keep changing prime ministers? It's due in part of it being a "single-party system", says Prof James Brown of Temple University Japan.
The LDP's grip on the country's politics means the primary rivalry originates inside the party, rather than from external parties.
"Therefore inside the LDP there are vicious struggles within various groups - they all desire their own clique to secure the leadership position."
"So even though you could be selected as leader, as soon as you're in power, you have dozens of people scheming to try to remove you again."
Main Reasons Behind Frequent Changes
- One-party dominance limits outside challenges
- Internal factional rivalries fuel leadership contests
- The prime minister's position is frequently called a "poisoned chalice"
- Political stability stays elusive despite economic strength
