Wikipedia (en)
Sanseitō (Japanese: 参政党, lit. 'Political Participation Party') is an ultraconservative, right-wing populist political party in Japan. It is on the far-right of the political spectrum and considered by some political commentators to have fascist elements.
The party was founded in 2020 and won a seat in the 2022 House of Councillors election, also becoming an official political party by winning more than 2% of the vote in the election. Sanseitō gained international media attention during the 2022 House of Councillors election due to its Secretary General Sohei Kamiya's antisemitic rhetoric during public appearances and campaign rallies. In the 2024 general election, the party won 3 seats. In the 2025 House of Councillors election, the party won more than 14 seats, bringing its total seat number to 15.
The party promotes COVID-19 misinformation and anti-vaccine views, alongside claiming the pandemic was "staged". The party's president, Manabu Matsuda, has called COVID-19 vaccines a "murder weapon". The party is against same-sex marriage and public acceptance or understanding of LGBTQ people. According to the party's leader Kamiya, it is the Japanese equivalent of U.S. President Donald Trump's movement. The party strongly opposes immigration, claiming that foreigners bring crime and receive better treatment than native citizens. It proposes the establishment of a new constitution.