Shaking Up Japan's Governance: Yoshimura Proposes Third Osaka Referendum, Diet Seat Cuts, and Multiple Sub-Capitals

Hirofumi Yoshimura, leader of the Nippon Ishin no Kai (Japan Innovation Party) and Governor of Osaka, has ignited intense debate across the political spectrum with a series of bold proposals targeting Japan's national governance. In recent media interviews, Yoshimura unveiled plans to pursue a third referendum on the contentious "Osaka Metropolis Plan," slash 45 proportional representation seats in the House of Representatives, and designate multiple regional hubs as "sub-capitals."

A Third Referendum: Walking Back a Promise

Speaking to the Mainichi Shimbun and other media outlets, Yoshimura walked back his previous pledge never to run the Osaka Metropolis Plan referendum again after its second defeat. He announced plans to push for a third vote, justifying the reversal by pointing to Nippon Ishin's entry into a coalition government with the ruling Liberal Democratic Party (LDP) last October, which he argues solidified a national direction toward establishing a sub-capital. Yoshimura revealed intentions to present four structural models—reorganizing Osaka City into anywhere from three to 24 special wards—to a statutory council.

The announcement immediately drew fierce backlash from local residents. Critics slammed the move, asking, "Why waste taxpayers' money on something that has already been rejected twice?" and questioning Yoshimura’s credibility after breaking his word. Conversely, die-hard supporters welcomed the "third time's a charm" approach, highlighting a deeply polarized public sentiment.

Slashing 45 Diet Seats: Streamlining or "Discarding Public Will"?

Yoshimura also advocated for cutting 45 proportional representation seats in the House of Representatives. He emphasized that even if the House of Councillors (the upper house) resists the cut, he shares an understanding with Prime Minister Sanae Takaichi to push it through via a Lower House override vote. Yoshimura justified the reduction by citing Japan’s shrinking population and the rise of social media, which he claims makes diverse public opinions easier to visualize without needing as many representatives.

This reasoning met with swift condemnation. Taku Yamazoe, a Japanese Communist Party member of the House of Councillors, sharply criticized the proposal. "Even before World War II, when the population was half of what it is now, there were more Lower House members. Diverse public opinions must be accurately reflected in parliamentary seats, and cutting proportional seats does the exact opposite," Yamazoe said, calling it an "anti-democratic discarding of the public will using post-hoc excuses." Social media users also voiced concern, noting that the prevalence of misinformation on social networks makes them an unreliable substitute for democratic representation.

Decentralizing Japan with Multiple "Sub-Capitals"

In an interview with Kyodo News, Yoshimura expanded his vision for regional decentralization by naming Hokkaido, Aichi, and Fukuoka as potential candidates to join Osaka as designated "sub-capitals." He argued that fostering a multi-polar economic system is essential for Japan's future. "Allowing each region to experiment with unique economic, fiscal, and tax policies will drive Japan's overall growth through healthy competition," Yoshimura stated.

While some regional advocates welcome the idea of decentralization, skeptics question its feasibility. Critics argue that designating too many cities as sub-capitals dilutes the very definition of the term, and raise concerns that such a policy would favor specific major urban centers while leaving more rural prefectures further behind.

The Context

Nippon Ishin no Kai (Japan Innovation Party) is a right-leaning, reformist political party that originated in Osaka. Its signature policy has long been the "Osaka Metropolis Plan," which aims to dissolve Osaka City and restructure it into special wards similar to Tokyo, eliminating administrative redundancy between the city and prefecture. However, the plan was narrowly defeated in two tense public referendums in 2015 and 2020. The current political climate, featuring Sanae Takaichi as Prime Minister and a coalition dynamic between the LDP and Nippon Ishin, has emboldened Yoshimura—one of Japan's most visible and media-savvy politicians—to revive these structural reform debates on a national scale.