The is a constituency of the House of Councillors in the Diet of Japan. It consists of Iwate Prefecture and elects two Councillors, one every three years, making it one of the decisive single-member districts. Ichirō Ozawa came from the prefecture, and as a result, it is much more markedly competitive than many other rural, 2 seat districts. It was represented by two opposition members until 2022, when Hirose defeated CDP Councilor Eiji Kidoguchi to return it to split control. Kidoguchi defeated other opposition parties to win it back in a 2024 by-election following Hirose's resignation, returning the district to representation by opposition members. It is also one of the districts where the opposition have been most consolidated; the last time multiple major party opposition members ran was 2013. The last LDP member to represent the district before Hirose was Motoo Shiina, who left the party in 1998.
Elected Councillors Class of 1947(1947: 6-year term) Election year Class of 1950(1947: 3-year term) Katsuji Debuchi † 1947(Ind.)joined Ryokufūkai 1947 Tadashi Chida (Ind.) Matsusuke Kawamura(JLP) 1947 by-el. 1950 Matsusuke Kawamura(Yoshida faction LP) 1953 1956 Teiji Yamura † 1968(LDP) 1959 1962 Kankichi Watanabe(JSP) 1965 Michiyuki Isurugi † 1987(LDP) 1968 by-el. 1968 Sakari Masuda(LDP) 1971 1974 1977 1980 1983 1986 Kiyotaka Takahashi(LDP) Jin'ichi Ogawa(JSP) 1987 by-el. 1989 1992 Motoo Shiina(LDP)left LDP in 1993, later temporarily "Liberal Assembly" Yoshinori Takahashi(NFP) 1995 1998 Motoo Shiina(Ind.)joined "Independent Assembly" Tatsuo Hirano(LP) 2001 2004 Ryō Shuhama(DPJ)joined LF→TPJ→PLP in 2012 Tatsuo Hirano(DPJ)expelled in 2013 2007 2010 Tatsuo Hirano(Ind.) 2013 2016 Eiji Kidoguchi (Ind.) Takanori Yokosawa(Ind.)joined CDP in 2020 2019 2022 Megumi Hirose # (LDP) 2024 by-el. Eiji Kidoguchi (CDP) Takanori Yokosawa(CDP) 2025
Party affiliations as of election day; #: resigned; †: died in office.
Recent election results
|- style="background-color:#E9E9E9" ! colspan="3" style="text-align:left;" |Party total seats ! style="text-align:center;" | Won ! style="text-align:center;" | Total ! style="text-align:center;" | Change |- |bgcolor=| |colspan=2|Constitutional Democratic |align=right|1 |align=right|2 |align=right|
References House of Councillors: Alphabetical list of former Councillors