It consisted exclusively of non-party deputies, many of whom were formerly members of the Democratic Party.
But some members broke away on the left to form the Constitutional Democratic Party (CDP), and others were not accepted as candidates by the Party of Hope, including several long-term senior members.
Also, in May 2018, Kishirō Nakamura a 14-term member from Ibaraki and former Liberal Democrat, joined the Group of Independents.
Seven members around Yoshihiko Noda formed a successor group as The Reviewing Group on Social Security Policy (社会保障を立て直す国民会議, Shakaihoshō o tatenaosu kokumin kaigi).
[2] In March 2019, Kentarō Motomura resigned from his seat in order to mount his [successful] candidacy for mayor of Sagamihara City (part of the April 2019 Japanese unified local elections).