A fringe far-right populist party Sanseito was one of the biggest winners in the weekend's upper house election, attracting many voters with “Japanese First" platform that included calling for tougher restrictions on foreigners and the curtailment of gender equality and diversity policies.

Sanseito, a Japanese populist party that draws inspiration from Donald Trump's politics, is gaining support ahead of Sunday's upper house elections, suggesting a notable shift in the country's traditionally centrist landscape.

The success of the Sanseito party could reshape Japan’s domestic and foreign policy. It also aligns Japan with political trends in many other parts of the world.