日本政坛大地震，石破茂辞职！如何选出新首相？

Core Viewpoint - The resignation of Japanese Prime Minister Shigeru Ishiba is a strategic move to prevent further division within the ruling Liberal Democratic Party (LDP) ahead of a crucial vote on whether to hold a temporary presidential election [2][12][16]. Group 1: Political Context - Ishiba's resignation comes as the LDP faces unprecedented political challenges, having lost majority seats in both houses of the Diet during his tenure [4][5]. - The new party leader will need to secure nominations from 20 party members to run in the upcoming presidential election, with the last election featuring nine candidates [4][18]. - The process of electing a new prime minister is complicated by the LDP's loss of majority, requiring votes from both the House of Representatives and the House of Councillors [5][21]. Group 2: Market Implications - The transition to a new prime minister introduces uncertainty in the financial markets, as the new leader may implement more aggressive economic stimulus measures, potentially increasing fiscal pressure [3][7]. - The possibility of the new prime minister dissolving the Diet for early elections could further complicate Japan's political and economic outlook [6][27]. Group 3: Internal Party Dynamics - Ishiba's decision to step down was influenced by growing dissent within the party, with key figures urging him to resign to maintain party unity [12][13]. - Polls indicated that a significant majority of LDP members supported an early presidential election, reflecting the internal pressures Ishiba faced [13][14]. - Ishiba's resignation is seen as a tactical retreat to preserve his political image and minimize blame for the party's turmoil [16].