日本执政联盟突然破裂，带来哪些变数

Group 1 - The Komeito party has decided to withdraw from the ruling coalition with the Liberal Democratic Party (LDP) due to unsatisfactory responses regarding the reform of "black money politics" [1][2] - Komeito's leader, Saito Tetsuo, stated that the party will not take a purely oppositional stance towards the LDP but will evaluate policies on a case-by-case basis [1] - The LDP, despite the withdrawal, remains the largest party in the Diet, with a significant number of seats in both the House of Representatives and the House of Councillors [3] Group 2 - High-profile political dynamics are at play as Komeito's exit may complicate the election of new Prime Minister Kishi Nobuo, although he still has a considerable chance of succeeding [3][4] - The Constitutional provisions for the Prime Minister's election indicate that if no candidate receives a majority in the first round, a second round will determine the winner [3] - The opposition parties, particularly the Constitutional Democratic Party, express that a change in government is possible if they can unite, but face challenges in collaboration due to differing policy positions [4] Group 3 - The withdrawal of Komeito could lead to increased challenges for the new Prime Minister in both domestic and foreign policy, particularly if a new coalition cannot be formed [5] - A potential delay in the Prime Minister's election could extend a "political vacuum," complicating the transition of power and the ability to implement effective policies [6] - The instability in the political landscape may adversely affect Japan's foreign relations, especially with upcoming diplomatic engagements [6]