The is a constituency that represents Chiba Prefecture in the House of Councillors in the Diet of Japan. It has six Councillors in the 242-member house.

Outline The constituency represents the entire population of Chiba Prefecture. The district elects six Councillors to six-year terms, two sets of three each at alternating elections held every three years. Prior to the 2007 election the district elected four Councilors in two sets of two. The district has 5,092,741 registered voters as of September 2015. The Councillors currently representing Chiba are: Kuniko Inoguchi (Liberal Democratic Party (LDP), first term; term ends in 2016) Hiroyuki Konishi (Democratic Party, first term; term ends in 2016) Kenichi Mizuno (Democratic Party, first term; term ends in 2016) Junichi Ishii (LDP, second term; term ends in 2019) Hiroyuki Nagahama (Democratic Party, second term; term ends in 2019) Toshiro Toyoda (LDP, first term; term ends in 2019)

Elected Councillors Class of 1947 election year Class of 1950(3-year term in 1947) - Akira Ono(Ind.) Hisashi Yamazaki(Ind.) 1947 Yoshiaki Tamaya(Liberal) Ichiro Asai(Democratic) - 1950 Kinsuke Kanō(Liberal) Toshizō Tsuchiya(Liberal) 1950 by-election Fumie Kataoka(Social Democratic) Kan Kase(Ind.) Tamenosuke Kawaguchi(Liberal) 1953 1954 by-election Shigejiro Inō(Liberal) 1956 Shigejirō Inō(LDP) Kan Kase(Social Democratic) Kyūtarō Ozawa(LDP) 19591960 by-election Yoshio Kijima(LDP) 1962 Akio Yanaoka(Social Democratic) 1965 Gisaku Sugeno(LDP) 1967 by-election 1968 Ichitaro Watanabe(LDP) 1971 1974 Takayoshi Takahashi(LDP) Misao Akagiri(Social Democratic) 1977 1980 Yutaka Inoue(LDP) Sōichi Usui(LDP) 1981 by-election Yaeko Itohisa(Social Democratic) Hiroyuki Kurata(LDP) 1983 1986 1989 1992 Ryōzō Iwase(New Frontier) 1995 1998 Wakako Hironaka(Ind.) Akira Imaizumi(DPJ) 2001 2002 by-election Kazuyasu Shiina(LDP) 2004 Wakako Hironaka(DPJ) Ken Kagaya(DPJ) Hiroyuki Nagahama(DPJ) Junichi Ishii(LDP) 2007 2010 Hiroyuki Konishi(DPJ) Kuniko Inoguchi(LDP) Kenichi Mizuno(Your Party) Junichi Ishii (LDP) Toshirō Toyoda(LDP) Hiroyuki Nagahama(DPJ) 20132016Kuniko Inoguchi(LDP)Taichirō Motoe(LDP)Hiroyuki Konishi(DPJ)Hiroyuki Nagahama(CDP)Toshirō Toyoda(LDP)20192022Shoichi Usui(LDP)Kuniko Inoguchi(LDP)Hiroyuki Konishi(CDP)

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|Liberal Democratic |align=right|1 |align=right|3 |align=right|1 |- |bgcolor=| |colspan=2|Constitutional Democratic |align=right|1 |align=right|2 |align=right| |- |bgcolor=| |colspan=2|Democratic Party For the People |align=right|1 |align=right|1 |align=right|1

See also List of districts of the House of Councillors of Japan

References