Nagasaki 1st district was a constituency of the House of Representatives in the Diet of Japan. Between 1947 and 1993 it elected five Representatives by single non-transferable vote. It was located in Nagasaki and, as of 1993, consisted of the cities of Nagasaki, Isahaya and Shimabara and the Nishisonogi, Kitatakaki, Minamitakaki, Kamiagata and Shimoagata counties.

Representatives for Nagasaki 1st district included home minister Ichirō Honda, construction minister Motoharu Baba, foreign minister Tadashi Kuranari, education minister Takeo Nishioka (president of the House of Councillors in the 2010s, LDP vice secretary-general Fumio Kyūma (defence minister in the 1990s and 2000s) and NFP co-founder Yoshiaki Takaki (education minister in the 2010s).

Summary of results during the 1955 party system General election 1958 1960 1963 1967 1969 1972 1976 1979 1980 1983 1986 1990 1993 LDP & conservative independents 3 3 4 3 2 2 1 2 3 2 3 3 2 Opposition center-left 0 0 0 0 2 2 3 2 1 2 1 1 2 JSP 2 2 1 2 1 1 1 1 1 1 1 1 1 JCP 0 0 0 0 0 0 0 0 0 0 0 0 0 Seats up 5

Elected Representatives electionyear highest vote(top tōsen) 2nd 3rd 4th 5th 1947 Ichirō Honda (JLP) Hitoshi Imamura (JSP) Eisuke Honda (JLP) Torao Wakamatsu (JLP) Takeo Kubo (DP) 1948 by-el. Hachirō Tsubouchi (DLP) Akisada Okanishi (DLP) 1949 Ichirō Honda (DLP) Hachirō Tsubouchi (DLP) Chōjirō Taguchi (DLP) Akisada Okanishi (DLP) Torao Wakamatsu (DLP) 1952 Tsuyoshi Kihara (JSP, left) Motoharu Baba (LP) Ichirō Honda (LP) Chiyoji Yukizawa (LP) Chōjirō Taguchi (LP) 1953 Ichirō Honda (Yoshida LP) Motoharu Baba (Yoshida LP) Chōjirō Taguchi (Yoshida LP) Tarō Nakajima, 中嶋太郎 (Progressive) 1955 Hitoshi Imamura (JSP, right) Motoharu Baba (LP) Tarō Nakajima (JDP) Chōjirō Taguchi (LP) 1958 Motoharu Baba (LDP) Chōjirō Taguchi (LDP) Tadashi Kuranari (LDP) Tsuyoshi Kihara (JSP) Hitoshi Imamura (JSP) 1960 Tadashi Kuranari (LDP) Chōjirō Taguchi (LDP) Shigemitsu Nakamura (JSP) Tsuyoshi Kihara (JSP) 1963 Tadashi Kuranari (LDP) Chōjirō Taguchi (LDP) Motoharu Baba (LDP) Takeo Nishioka (Indep.)joined LDP (Miki faction) Shigemitsu Nakamura (JSP) 1967 Takeo Nishioka (LDP) Motoharu Baba (LDP) Tadashi Kuranari (LDP) Shigemitsu Nakamura (JSP) Tsuyoshi Kihara (JSP) 1969 Tadashi Kuranari (LDP) Nobuhito Matsuo (Kōmeitō) Takeo Nishioka (LDP) Takeki Komiya (DSP) Shigemitsu Nakamura (JSP) 1972 Shigemitsu Nakamura (JSP) Tadashi Kuranari (LDP) Nobuhito Matsuo (Kōmeitō) 1976 Takeo Nishioka (NLC) Takeki Komiya (DSP) Tadashi Kuranari (LDP) Shigemitsu Nakamura (JSP) Yoshinori Taniguchi (Kōmeitō) 1979 Tadashi Kuranari (LDP) Shigemitsu Nakamura (JSP) Takeo Nishioka (Indep.) Yoshinori Taniguchi (Kōmeitō) Masayoshi Kobuchi (DSP) 1980 Masayoshi Kobuchi (DSP) Fumio Kyūma (LDP) 1983 Shigemitsu Nakamura (JSP) Kakuji Miyazaki (Kōmeitō) Masayoshi Kobuchi (DSP) Tadashi Kuranari (LDP) 1986 Takeo Nishioka (LDP) Tadashi Kuranari (LDP) Kenji Taguchi (JSP) Masayoshi Kobuchi (DSP) 1990 Kenji Taguchi (JSP) Takeo Nishioka (LDP) Yoshiaki Takaki (DSP) Fumio Kyūma (LDP) Tadashi Kuranari (LDP) 1993 Takeo Nishioka (LDP) Ken'ichirō Hatsumura (JNP) Fumio Kyūma (LDP) Kenji Taguchi (JSP) Yoshiaki Takaki (DSP)

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