Japan’s voters will deliver a verdict on Prime Minister Shigeru Ishiba’s 10 months in office on Sunday, in an upper house election that takes place amid simmering discontent over inflation and unresolved negotiations with the U.S. on tariffs.

The ruling Liberal Democratic Party and its junior coalition partner Komeito are battling the opposition for 125 spots in the 248-member chamber. Ishiba is aiming to win 50 of those seats to retain an overall majority, a goal that would still mean the coalition losing as many as 16 seats.

Achieving that modest target may help Ishiba shore up his leadership for now, but recent opinion polls indicate the ruling parties are at risk of falling short. That would further destabilize Ishiba’s minority government, potentially adding to jitters among market

See Full Page