日本政坛剧烈变化，投资者谨慎评估

Core Viewpoint - The ruling Liberal Democratic Party (LDP) in Japan is losing its long-standing advantage over opposition parties due to rising inflation and dissatisfaction among young voters, leading to a significant political shift [1][2]. Political Landscape - The recent Senate elections revealed a decline in support for the LDP, with opposition parties gaining traction, particularly the right-wing populist Sanseito party, which has raised concerns among investors due to its radical proposals [1][2]. - The LDP has not maintained a majority in both houses of parliament for the first time since its establishment in 1955, prompting calls within the party for a shift towards a more nationalist stance [2][3]. Economic Concerns - Japan's inflation rate has reached its highest level in over 20 years, with a 4.3% increase noted in early 2023, causing public discontent as wages fail to keep pace with rising living costs [5][6]. - The political fragmentation and calls for increased government spending have raised investor concerns about Japan's ability to manage its significant debt burden, leading to a rise in long-term bond yields [3][7]. Market Reactions - The 10-year government bond yield surged to its highest level since 2008, reflecting investor anxiety over the government's fiscal situation and the potential for increased spending commitments [3][7]. - Despite political uncertainty, Japanese stock prices remain high, supported by foreign investment and corporate initiatives to enhance shareholder value [7][8]. Future Implications - The rise of the Sanseito party and its proposals, such as the phased abolition of the consumption tax, could significantly impact Japan's fiscal revenue, potentially reducing it by approximately 25 trillion yen, or over 4% of GDP [7][10]. - The political landscape may further divide into factions advocating for expanded government functions versus those promoting streamlined governance through tax reductions [11][12]. Geopolitical Context - Japan's increasing fiscal challenges and the economic pressures from tariffs imposed by former U.S. President Trump may hinder its ability to meet U.S. defense spending requirements, prompting a reevaluation of its foreign policy and alliances [12][13].