The presidential race within Japan's ruling Liberal Democratic Party (LDP) is heating up, with the prospect of determination by a runoff vote seemingly inevitable. This comes as no single candidate appears to be garnering sufficient support to win outright. The ultimate decision, which will also dictate the next Prime Minister, is likely to reflect the factional balance of power within the LDP and the broader political dynamics in the country.

In Japan, internal party elections are heavily cited, as the ruling party's president normally becomes the Prime Minister. This election has a heightened sense of political and social importance due to the end-of-term resignation of the current Prime Minister. The outcome directly affects the governance and policy directions of the country, thereby attracting interest from different sectors of society.

Like in the US and EU, internal party politics play a crucial role in determining the country's leadership. However, unlike the popular vote system in the US or the parliamentary system in EU countries, Japan's leader is determined largely by internal party decisions.