nnJapanese voters are casting ballots today in a critical upper house election that could determine Prime Minister Shigeru Ishiba’s political future. The ruling coalition faces potential losses amid public frustration over rising prices, particularly for staple foods like rice. The election coincides with tense US trade negotiations threatening tariffs up to 35% on Japan’s auto industry. A populist opposition party, Sanseito, has gained traction with nationalist policies targeting immigration and globalism. If Ishiba’s coalition fails to secure 50 seats, Japan could face political instability and leadership challenges.