Contest to lead ruling party and country appears to be two-horse race between Taro Kono and Fumio Kishida

The race to become leader of Japan’s ruling party and the next prime minister is too close to call ahead of next week’s party election. It is a rare moment of uncertainty after almost a decade during which Shinzō Abe became the country’s longest-serving prime minister until he was replaced last year by his close ally Yoshihide Suga.

When Abe abruptly announced his resignation last August, citing the recurrence of a chronic health problem, the identity of his successor was never in doubt. As Abe’s chief cabinet secretary for almost eight years, Suga had proved a loyal lieutenant, perfecting the role of taciturn spokesperson in his daily encounters with the media.