Japan’s 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.

Exit polls suggest Prime Minister Shigeru Ishiba's coalition is likely to lose a majority its majority in the smaller of Japan’s two parliamentary houses in a key election.

Japan's ruling coalition possibly lost its majority in the upper house, exit polls showed after Sunday's election, potentially heralding political and market turmoil as a deadline looms on tariff negotiations with the United States.