It won its first seat in the upper house in 2022, following a campaign in which it fashioned itself as an "anti-globalist" party. Supporters at rallies spoke of a world where a cabal of globalists and financial institutions were conspiring to lord over powerless citizens.

Japan’s relatively new Sanseito party won 14 seats in Sunday’s election, a sizable gain for the party. Its platform includes a "Japanese first" agenda.