The nation set to choose woman prime minister in landmark first
Over the last two decades, Japan has seen more than 10 leaders.
In fact, one expert compares assuming the country's highest office to drinking from a "poisoned chalice".
But why does the country frequently replace leaders? This is partly because of it being a "single-party system", says Professor James Brown of Temple University in Japan.
The LDP's grip on the political landscape means the main political competition originates inside the party, rather than from external parties.
"So within the LDP there are vicious struggles within various groups - they all want their own clique to get the top job."
"Thus although you could be chosen as leader, as soon as you're in power, you have dozens of people scheming to try to get you out again."
Main Reasons Behind Frequent Changes
- One-party dominance restricts outside challenges
- Party infighting drive power struggles
- The prime minister's position is frequently called a "poisoned chalice"
- Political stability stays elusive despite financial power
