TOKYO. Japan’s ruling party, mauled in yesterday’s upper-house election, faces an uphill struggle to win new allies that will support its policies to cut back huge public debt — and bitter infighting over whether the premier should quit. Voters dealt Prime Minister Naoto Kan’s Democratic Party of Japan a stinging rebuke in the election, depriving it of a majority less than a year after the Democrats swept to power with promises of change.

 

Media projections showed Kan’s Democratic Party of Japan won fewer than 50 seats and its tiny partner, the People’s New Party, won none.