Japan's coalition government led by Prime Minister Shigeru Ishiba lost its parliamentary majority in Sunday's election after large gains made by right-wing populist parties, in a sign that right-wing populism and polarization are now also undermining political stability in Japan.

For now, Ishiba has vowed to hang on as prime minister, despite the second election debacle in nine months. His Liberal Democratic Party (LDP) lost a snap election last October, making it a minority party ruling with a coalition.

Ishiba has said he would "humbly accept" the result and "continue to take responsibility for national affairs."

However, Ishiba's continuation as prime minister no longer depends on him alone. A strengthened opposition could topple him at any time with a vote of no confidence, even if these parties are not united enough to forge a governing coalition themselves.

Ishiba also faces the threat of a rebellion within the LDP, which has........

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