Japan's Prime Minister Shigeru Ishiba has announced he is stepping down after less than a year in the role, following two major election losses.

The move comes a day before his Liberal Democratic Party (LDP) was expected to vote on whether to hold an internal leadership vote that could have forced him out.

The LDP has governed Japan for most of the past seven decades, but under Ishiba it lost its majority in the lower house for the first time in 15 years and then lost its majority in the upper house in July.

Was Ishiba’s resignation inevitable? Who could replace him as Japan’s next prime minister?

On The Big Story, Hongbin Jeong speaks with Stephen Nagy, Professor of Politics & International Studies at the International Christian University, to find out more.