In 2015 changes to the electoral laws merged Hirota's Kōchi at-large district with the neighbouring Tokushima district, in order to address the problem of disparity in the representation of urban and rural areas. In October 2015 Hirota announced that he would not contest the merged Tokushima-Kōchi at-large district at the 2016 election as a protest against the merger.[1] In June 2016 it was reported that Hirota would instead contest one of Kochi Prefecture's districts at the next House of Representatives election, to be held by the end of 2018.[2] His decision meant that no candidates that contested the new district were born in Kochi Prefecture.
References
^"民主党・広田氏、「徳島・高知」から不出馬" [Democrat Hirota will not contest Tokushima-Kochi]. Mainichi Shimbun (in Japanese). 1 November 2015. Archived from the original on 5 May 2016. Retrieved 7 July 2016.
^"参院改選19人が引退・不出馬 江田元議長ら" [19 Councillors to retire or not contest election, including former president Eda]. Nikkei (in Japanese). 2 June 2016. Retrieved 7 July 2016.