Key Facts
• The Democratic Party for the People (DPP) and the Constitutional Democratic Party (CDP) marked their 5th anniversary on September 15, 2025.
• The DPP, led by Yuichiro Tamaki, focused on increasing take-home pay and gained support from non-LDP voters.
• The CDP, under Yoshihiko Noda since September 2024, expanded seats in the October 2024 general election but saw no change in the July 2025 upper house election.
• On September 12, 2025, DPP Secretary-General Katsuyuki Shinba rejected the media’s portrayal of the DPP and CDP as “brother parties.”
• Shinba criticized the media for creating public opinion by using the term “brother parties” despite his denial.
• He emphasized that the DPP maintains equal distance from all parties and collaborates on shared policies with both the CDP and the Japan Innovation Party.
Summary
The Democratic Party for the People (DPP) and the Constitutional Democratic Party (CDP) celebrated their 5th anniversary on September 15, 2025. While the DPP focused on increasing take-home pay and gained traction among non-LDP voters, the CDP saw mixed results under Yoshihiko Noda’s leadership. DPP Secretary-General Katsuyuki Shinba, in a press conference on September 12, criticized the media for labeling the two parties as “brother parties,” asserting that the DPP maintains equal distance from all parties. Shinba reiterated the DPP’s commitment to policy collaboration with other parties, including the CDP and the Japan Innovation Party, where shared goals align.
