Japan electionJapan PM Ishiba's fate hangs in balance as voters head to Sunday polls
Ishiba could be forced to step down or find a partner for ruling coalition
Ishiba could stay in power even if his coalition fails to reach a majority, but would likely face obstacles to passing legislation. (Photo by Uichiro Kasai)
TOKYO -- With Japan's ruling coalition facing the possibility of losing a majority in Sunday's upper house election, the outcome could force Prime Minister Shigeru Ishiba to expand the alliance to advance policies or resign outright if his party loses big.