In the Japanese diet the support of 51 lawmakers is required to submit a co-confidence motion to the lower house.

[6] On August 29, 2012 the House of Councillors passed a censure motion against Noda based on the one previously submitted by the seven opposition parties.

[7] While the censure motion was non-binding, the opposition parties planned to boycott the remaining sitting days before the diet session finished on September 8, preventing further legislation from being passed.

[8] Following the resounding victory of Abe and the LDP in the 2012 general election, in which the NRP failed to win a single seat, Masuzoe announced in June 2013 that he would not stand for re-election in the July 2013 House of Councillors election, stating that "I have done the best I could for nearly three years, but I was unable to boost [the party's] strength.

[10] Two independents, Kazuyuki Hamada and Tatsuo Hirano, joined the NRP's caucus in the House of Councillors on July 24, and the NRP upper house caucus was renamed "New Renaissance Party and Group of Independents" (新党改革・無所属の会, NRP-GI).