Japanese Prime Minister Shigeru Ishiba ’s ruling coalition failed Monday to secure a majority in the 248-seat upper house in a crucial parliamentary election, NHK public television said. Ishiba’s Liberal Democratic Party and its junior coalition partner Komeito needed to win 50 seats on top of the 75 seats they already have to reach the goal.

CNBC's Martin Soong, Chery Kang, and Kaori Enjoji discuss how the ruling coalition's defeat in Japan's upper house election complicates policy formation in the country, including the Bank of Japan's aim to normalize monetary policy.

Japan's ruling coalition has lost its majority in the country's upper house, but Prime Minister Shigeru Ishiba has said he has no plans to quit.

The ruling LDP has only been able to remain in office as a minority government as a result of the deep divisions among the opposition parties—between the far-right and the nominally liberal parties.

The loss is another blow to the coalition led by Prime Minister Shigeru Ishiba, who could face calls from his party to step down

Japan’s Prime Minister Shigeru Ishiba faces a critical test in Sunday’s upper house election. A loss could deepen political instability as his government struggles with rising prices, U.S.

The loss on Sunday left the Liberal Democrats a minority party in both houses of Parliament, while two new nationalist parties surged.

Japan's Prime Minister Shigeru Ishiba faces an increasingly uphill battle in Sunday's upper house election, and a loss could worsen political instability at a time of daunting challenges, such as rising prices and high U.

TOKYO (Reuters) -Japanese Prime Minister Shigeru Ishiba is planning to decide on his future after assessing progress in tariff negotiations with the United States, Yomiuri newspaper reported on Wednesday.