In January 2026, the Constitutional Democratic Party of Japan (CDP) and Komeito, the former coalition partner of the Liberal Democratic Party (LDP), formed the Centrist Reform Alliance (CRA), creating a 167-seat bloc to challenge the long-dominant LDP. But lacking time to establish a distinct identity and coordinate policies, the CRA was swiftly defeated in the February 2026 general election.
The CRA secured only 49 seats — including 42 through proportional representation and 7 in single-member districts (SMDs) — reducing its representation to roughly one-third of its pre-election total. Sitting Komeito members contested through proportional representation and all secured seats, while most sitting CDP members contested SMDs and lost their seats.
Japan’s mixed electoral system, which combines SMDs and proportional representation, generates conflicting incentives for opposition parties. SMD contests encourage parties to coordinate candidacies to prevent vote-splitting. Yet competition for proportional representation seats motivates parties to preserve distinct political identities to maximise party-list support.
For the CDP, forming the CRA was an attempt to move beyond its established centre-left image. Following its defeat in the 2021 general election, during which it had an electoral alliance with opposition parties including the Japanese Communist Party, the CDP leadership sought to reposition the party towards the political centre to attract broader support. Cooperation with Komeito appeared to offer this opportunity.
