Yasuo Fukuda is the runaway favorite to become Japan's next prime minister, according to a newspaper poll of ruling party lawmakers who will vote for a new leader on Sunday.

The Yomiuri Shimbun survey, released on Monday, showed that  55% of Liberal Democratic Party (LDP) lawmakers would back the 71-year-old Fukuda and just 12% would support his rival for the job, hawkish former foreign minister Taro Aso.