This article has two objectives. One is to explain the rise of female political representation in local assemblies in Tokyo's 23 Special Wards. The other is to examine how political women in Japan have or have not changed since the publication of Susan Pharr's "Political Women in Japan in 1981."

When Tokyo first saw the emergence of a new type of local assembly women in the 1990s, they consisted of well-educated suburban housewives who led the Seikatsusha Nettowaku movement. In the past 15 years, however, Tokyo has witnessed a decline in ‘housewife politicians’ and a further diversification in the types of political women.

This article pays special attention to a new type of political women called Mama Giin (literally, mommy politicians). Mama Giin are professional working mothers, who have become local assembly women to address deficiencies in childcare services.

Their numbers increased as socio-economic changes and party realignment reshaped supply and demand for female candidates in Tokyo. Most of them accept the gendered responsibilities for childcare very much like Pharr's New Women did in the 1970s.

The younger cohorts of highly educated women enjoy greater job options and life choices unavailable to the New Women of their mothers' generation. However, they do not necessarily challenge Japan's patriarchy.

This article examines the biographies of female local politicians in Tokyo's 23 Special Ward assemblies to understand the rise of Mama Giin.