Japan’s shaky ruling coalition is likely to lose its majority in the upper house, exit polls showed after Sunday’s election, potentially heralding political turmoil as a tariff deadline with the United States looms.

Prime Minister Ishiba Shigeru and his Liberal Democratic Party were projected to lose their majority coalition government in Japan's Upper House of Parliament on Monday.

Japan’s Prime Minister Shigeru Ishiba faces a tough test in an upper house election this month as his minority government struggles after its major defeat in last year’s snap election.