# Genzei Nippon

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Japanese regional political party

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Genzei Nippon 減税日本 Leader Takashi Kawamura Founder Takashi Kawamura Founded April 26, 2010 (2010-04-26) Headquarters Nagoya, Aichi Prefecture Ideology Japanese nationalism[1] Populism[2] Economic liberalism[3] National affiliation Tax Cuts Japan (2012) Tomorrow (2012–2013) CPJ (2023–2025) Genzei–Yukoku (2026–present) Aichi Prefectural Assembly 3 / 102 Nagoya City Council 8 / 68 Website genzeinippon.com Politics of Japan Political parties Elections

**Genzei Nippon** (減税日本; lit. 'Tax Reduction Japan') is a [regional political party](/source/Regional_political_party) based in [Nagoya](/source/Nagoya), Japan and led by the former mayor of Nagoya, [Takashi Kawamura](/source/Takashi_Kawamura_(politician)). The party was formed by Kawamura in April 2010. After briefly holding several seats in the national legislature, the party merged at the national level with the [Tomorrow Party of Japan](/source/Tomorrow_Party_of_Japan) in November 2012 before that party's dissolution in May 2013. Genzei Nippon remained a separate party at the regional level and has been active within [Aichi Prefecture](/source/Aichi_Prefecture). As well as Kawamura, the party has thirteen members serving on the Nagoya city council and three members serving on the [Aichi Prefectural Assembly](/source/Aichi_Prefectural_Assembly).

In October 2023, it was announced that the party would be affiliated on the national level with [Naoki Hyakuta](/source/Naoki_Hyakuta)'s [far-right](/source/Far-right_politics) [Conservative Party of Japan](/source/Conservative_Party_of_Japan), but the relationship was severed in September 2025 after a feud between Kawamura and Hyakuta.

## History

The party was founded by [Takashi Kawamura](/source/Takashi_Kawamura_(politician)), then the mayor of Nagoya, and registered with the [Aichi Prefectural](/source/Aichi_Prefecture) electoral commission on 26 April 2010.[4] At a press conference held on the same day, Kawamura emphasized the point that the greatest support that politicians can provide to citizens is a reduction in taxes.[4]

The party first gained representation in the [national Diet](/source/National_Diet) in May 2011 when [Yuko Sato](/source/Yuko_Sato_(politician)), the representative for the [Aichi 1st district](/source/Aichi_1st_district) in the [House of Representatives](/source/House_of_Representatives_(Japan)), officially resigned from the ruling [Democratic Party of Japan](/source/Democratic_Party_of_Japan) (DPJ).[5] Sato had lodged her resignation with the party in March in order to provide support to Genzei Nippon's candidates in the Nagoya city council election, but her application was put on hold while DPJ officials considered expulsion instead.

Two more DPJ members of the House of Representatives, [Koki Kobayashi](https://en.wikipedia.org/w/index.php?title=Koki_Kobayashi&action=edit&redlink=1) from the [Tokyo proportional representation block](/source/Tokyo_proportional_representation_block) and [Toshiaki Koizumi](https://en.wikipedia.org/w/index.php?title=Toshiaki_Koizumi&action=edit&redlink=1) of the [Ibaraki 3rd district](/source/Ibaraki_3rd_district), left the party to join Genzei Nippon in August 2012.[6] On 31 August, the three representatives joined with fellow DPJ defector [Tomoyuki Taira](https://en.wikipedia.org/w/index.php?title=Tomoyuki_Taira&action=edit&redlink=1) to form the *Genzei Nippon-Heian* voting block within the House of Representatives, with Koizumi as the leader.[7]

DPJ representatives [Atsushi Kumada](https://en.wikipedia.org/w/index.php?title=Atsushi_Kumada&action=edit&redlink=1) ([Osaka 1st district](/source/Osaka_1st_district)) and [Tomohiko Mizuno](https://en.wikipedia.org/w/index.php?title=Tomohiko_Mizuno&action=edit&redlink=1) ([Southern Kanto block](/source/Southern_Kanto_proportional_representation_block)) joined Genzei Nippon in October 2012, giving the party five Diet members, the minimum requirement for registration as an official party.[8] The party was registered with Kawamura as the leader on 31 October 2012.[7] On 13 November, Taira, who had remained an independent within the House, left the voting block to join [Your Party](/source/Your_Party_(Japan)), which led to the voting block being renamed *Genzei Nippon*.[7]

On 22 November 2012, the party merged at the national level with the Anti-TPP, Zero Nuclear Party, which had been established just three days prior, to form the *Tax Reduction, Anti-TPP, Zero Nuclear Party*.[7] A few days later this group further merged into the [Tomorrow Party of Japan](/source/Tomorrow_Party_of_Japan) in order to contest the [2012 general election](/source/2012_Japanese_general_election). Genzei Nippon continued to exist at the regional level following the national mergers, led by Kawamura. In the [2015 unified local elections](/source/2015_Japanese_unified_local_elections), the party won 12 seats on the 75-seat Nagoya city council.[9]

On 17 October 2023, during the first press conference and party meeting of the newly-founded [Conservative Party of Japan](/source/Conservative_Party_of_Japan), it was announced that Genzei Nippon would be affiliated nationally with the Conservative Party, with Kawamura becoming the Conservative Party's vice president.[10]

Around the time of the election, reports emerged of internal tensions between Hyakuta and Kawamura regarding the party's management. In September 2025, Diet member Yuko Takegami, a close ally of Kawamura, left the party, citing disagreements with Hyakuta and Kawamura's marginalization in leadership decisions. Later that month, the party announced it was severing ties with Genzei Nippon, and Kawamura was removed from his position as co-leader. Kawamura was reportedly considering forming a new party in response.[11]

## Presidents

No. Name Image Term of office National affiliation Took office Left office 1 Takashi Kawamura 26 April 2010 Incumbent Tax Cuts Japan (22–27 November 2012) Tomorrow Party (27 November 2012 – 17 May 2013) Conservative Party (17 October 2023 – 3 October 2025)

## See also

- [Japan portal](https://en.wikipedia.org/wiki/Portal:Japan)
- [Politics portal](https://en.wikipedia.org/wiki/Portal:Politics)

- [Tax Cuts Japan](/source/Tax_Cuts_Japan)

## References

1. **[^](#cite_ref-1)** Masahiro Kobori (2012). ["ポピュリズムの日英比較：ネオ・リベラル的 ポピュリズムという日本の「特色」"](http://www.ritsumei.ac.jp/acd/cg/law/lex/12-56/kobori.pdf) [Comparing Populism in Japan and the UK: Japan's "Characteristics" of Neo-liberal Populism] (PDF). *Ritsumeikan Law Journal* (in Japanese). **5–6** (345–346).

1. **[^](#cite_ref-2)** ["ポピュリズム、それは危険な存在か、民主主義の促進剤か"](https://globe.asahi.com/article/11824476). *Asahi Shimbun Globe+*. 21 September 2018.

1. **[^](#cite_ref-3)** ["減税日本(ゲンゼイニッポン)とは？ 意味や使い方"](https://kotobank.jp/word/%E6%B8%9B%E7%A8%8E%E6%97%A5%E6%9C%AC-190046). *Kotobank* (in Japanese). Retrieved 12 October 2025.

1. ^ [***a***](#cite_ref-found_4-0) [***b***](#cite_ref-found_4-1) ["新政治団体「減税日本」設立＝市議会解散へ布石−河村名古屋市長"](https://web.archive.org/web/20170208073357/http://news.yahoo.co.jp/pickup/1935917) [New political group "Genzei Nippon" established - Nagoya mayor Kawamura preparing for city council election] (in Japanese). 26 April 2010. Archived from [the original](http://news.yahoo.co.jp/pickup/1935917) on 8 February 2017. Retrieved 16 March 2016.

1. **[^](#cite_ref-Sato_5-0)** ["民主、佐藤夕子氏の離党届受理 減税日本初の国会議員に"](https://web.archive.org/web/20110516152225/http://www.asahi.com/politics/update/0513/TKY201105130258.html) [DPJ accepts Yuko Sato's defection, Genzei Nippon's first national Diet member] (in Japanese). [Asahi Shimbun](/source/Asahi_Shimbun). 13 May 2011. Archived from [the original](http://www.asahi.com/politics/update/0513/TKY201105130258.html) on 16 May 2011. Retrieved 16 March 2016.

1. **[^](#cite_ref-6)** Johnston, Eric (18 August 2012). ["Latest DPJ defectors to join Nagoya force"](http://www.japantimes.co.jp/news/2012/08/18/national/latest-dpj-defectors-to-join-nagoya-force/). Japan Times. Retrieved 16 March 2016.

1. ^ [***a***](#cite_ref-Ugoki_7-0) [***b***](#cite_ref-Ugoki_7-1) [***c***](#cite_ref-Ugoki_7-2) [***d***](#cite_ref-Ugoki_7-3) ["衆議院の動き 第20 号"](http://www.shugiin.go.jp/internet/itdb_annai.nsf/html/statics/ugoki/h24ugoki.pdf/$File/h24ugoki.pdf) [House of Representatives Activity Vol. 20] (PDF) (in Japanese). March 2013. pp. 492–496. Retrieved 16 March 2016.

1. **[^](#cite_ref-8)** ["民主の熊田・水野両議員が離党へ 減税日本への合流検討"](http://www.asahi.com/special/minshu/TKY201210290103.html) [DPJ's Kumada and Mizuno defect, considering joining Genzei Nippon] (in Japanese). 29 October 2012. Retrieved 16 March 2016.

1. **[^](#cite_ref-9)** ["開票結果-政令市議選・愛知県【統一地方選2015】"](http://www.yomiuri.co.jp/election/local/2015/kaihyou/yi23.html) [Election Results - Designated city council elections: Aichi Prefecture (Unified local elections 2015)] (in Japanese). Yomiuri Shimbun. Retrieved 16 March 2016.

1. **[^](#cite_ref-:0_10-0)** ["名古屋 河村市長「日本保守党」共同代表に就任"](https://web.archive.org/web/20231018021057/http://www3.nhk.or.jp/news/html/20231017/k10014228101000.html). *NHK*. 17 October 2023. Archived from [the original](https://www3.nhk.or.jp/news/html/20231017/k10014228101000.html) on 18 October 2023. Retrieved 11 November 2023.

1. **[^](#cite_ref-11)** ["日本保守党「愛知県は特に力を入れる」 河村たかし氏の離党、新党設立報道で対決姿勢鮮明"](https://www.sankei.com/article/20251003-K3UKZKA5YJBGBGRKAURUM35FOQ/) [Japan Conservative Party: "We will put particular effort into Aichi Prefecture" - Takashi Kawamura leaves party, reveals confrontational stance amid reports of new party formation]. *Sankei Shimbun* (in Japanese). 3 October 2025. Retrieved 3 October 2025.

## External links

- [Official website](http://genzeinippon.com/) (in Japanese)

v t e Political parties in Japan Bracketed numbers indicate numbers of seats in the House of Representatives (Lower House) of the National Diet immediately after the 2026 general election Officially recognized political parties Government Liberal Democratic (316) Japan Innovation (Extra-cabinet Support, 36) Opposition Centrist Reform Alliance (49) Democratic For the People (28) Sanseitō (15) Team Mirai (11) Communist (4) Reiwa Shinsengumi (1) Conservative Constitutional Democratic Komeito Social Democratic Political organizations with seats in the National Diet Tax Cuts and Yukoku Alliance (1) Okinawa Whirlwind Portal:Politics List of political parties Politics of Japan

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Adapted from the Wikipedia article [Genzei Nippon](https://en.wikipedia.org/wiki/Genzei_Nippon) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Genzei_Nippon?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.