Polls opened Sunday (Jul 7) to elect a new Tokyo governor with incumbent Yuriko Koike challenged by opposition figure Renho, two prominent women in Japan's male-dominated political sphere.

In male-dominated Japan, Tokyo votes for governor as Koike seeks reelection

Japanese Chief Cabinet Secretary Yoshihide Suga was being expected to turn out people's favourite in the upcoming elections to replace former Prime Minister Shinzo Abe, and the opinion polls are now supporting that assumption.

Yoshihide Suga frontrunner in race to succeed Shinzo Abe: Poll

Japanese Prime Minister Shinzo Abe`s Liberal Democratic Party and its junior coalition partner, the Komeito party, look set to retain a solid majority in parliament`s upper house in Sunday`s election, media surveys show.

Key facts and numbers to watch in Japanese election