1929- . Japanese socialist politician, leader of the Japan Socialist Party (JSP) from 1986 and responsible for much of its recent revival. She is the country's first female major party leader. Doi was a law lecturer before being elected to the House of Representatives in 1969. She assumed leadership of the JSP at a low point in the party's fortunes and proceeded to moderate and modernize its image. With the help of `housewife volunteers' she established herself as a charismatic political leader, and at a time when the ruling Liberal Democrats were beset by scandals, the JSP vote increased to make Doi the leader of an effective opposition.