Tokyo — Japan’s political landscape has shifted dramatically following the upper house elections, as the far-right Sanseito party emerged as a significant force and Prime Minister Shigeru Ishiba’s ruling coalition suffered a major setback.
Sanseito, also known as the “Japanese First” party, surged from obscurity to win 14 seats in the 248-member upper house. Previously holding only one seat, the party capitalized on a nationalist and anti-immigration platform that resonated with voters frustrated by economic stagnation and rising living costs. The party also holds three seats in the lower house and now aims to become a dominant presence in national politics.
Sanseito leader Sohei Kamiya, known for his fiery speeches and YouTube origins, described Japan as facing a “silent invasion” from immigrants and called for strict immigration controls, tax cuts, and generous child benefits. His rhetoric drew comparisons to former U.S. President Donald Trump, and analysts noted that Sanseito’s rise mirrors populist trends across Europe and North America.
In contrast, Prime Minister Ishiba’s Liberal Democratic Party (LDP), together with its coalition partner Komeito, managed to secure only 47 of the 50 contested seats, resulting in the loss of their upper house majority. The election outcome follows an earlier loss in the lower house, further weakening the administration’s legislative grip.
Despite the defeat, Prime Minister Ishiba has vowed to remain in office, citing the urgency of ongoing trade negotiations with the United States. Japan faces a looming deadline of August 1 to resolve tariff disputes, particularly concerning the auto industry. A failure to secure a deal could result in significant economic consequences.
To address growing public concern over immigration, the LDP has proposed new measures, including the creation of a taskforce to investigate crimes involving foreigners and a pledge to eliminate the presence of illegal immigrants. Critics argue this move is a direct response to Sanseito’s influence and could shift government policy further to the right.
Sanseito’s success has sparked debate within the political establishment. Some members of the LDP are reportedly questioning Ishiba’s leadership, while opposition parties consider launching no-confidence motions. The result is likely to lead to increased legislative gridlock, with the ruling coalition needing to negotiate with a more fragmented and ideologically diverse upper house.
Analysts warn that Sanseito’s proposed tax reductions and social spending could strain Japan’s already high public debt. The party also opposes gender-equality policies, claiming they undermine traditional family values and discourage childbirth.
As Japan navigates economic uncertainty and political fragmentation, the rise of Sanseito signals a broader shift in public sentiment. With ambitions to win 50 to 60 seats in future elections, the party is poised to shape the nation’s political future for years to come.