The Yamaguchi at-large district is a constituency of the House of Councillors in the Diet of Japan (national legislature). It consists of the entire prefecture of Yamaguchi and is represented by two Councillors electing one every three years.
Single-member districts usually get higher attention in House of Councillors elections because they are easier to swing completely than multi-member districts. But Yamaguchi has consistently voted for LDP candidates between the 1960s and 1980s. In the 1989 election when the ruling LDP lost the upper house majority for the first time, Socialist Kenichi Yamada beat incumbent Masuo Matsuoka by a margin of more than 100,000 votes. Matsuoka later ran as an independent and won Yamaguchi again in 1998. He later joined the Democratic Party of Japan.
Currently Yamaguchi is represented by two Councillors: Tsuneo Kitamura (LDP, Abe faction) Kiyoshi Ejima (LDP, Abe faction)
Elected Councillors Electionyear Class of 1947 Class of 1950 #1(1947: #1, 6-year term) #1(1947: #2, 3-year term) 1947 Takeo Kurusu (JLP) Isuke Himei (JSP) 1950 Mochinaga Nakagawa (LP) 1953 Kimiko Abe (Indep.) 1956 Yūkei Kinoshita (JSP) 1959 Eichi Yoshitake (LDP) 1962 Kengo Futatsugi (LDP) 1965 1968 1971 1974 1977 Tarō Ozawa (LDP) 1980 Atsushi Ejima (LDP) 1983 Masuo Matsuoka (LDP) 1986 1987 by-el. Hideo Futatsugi (LDP) 1989 Kenichi Yamada (JSP) 1992 1995 Yoshimasa Hayashi (LDP) 1998 Masuo Matsuoka (Indep.) 2001 2004 Nobuo Kishi (LDP) 2007 20102013 by-el.Kiyoshi Ejima (LDP)2013201620192021 by-el. Tsuneo Kitamura (LDP)2022
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