Coalition eyes introducing Adams’ electoral method following 2020 census


The ruling bloc is considering having the House of Representatives introduce the so-called Adams’ electoral method based on the planned full-scale national census in 2020, coalition officials said.

The Liberal Democratic Party, the dominant partner in the alliance, plans to stipulate the introduction of the Adams’ method in planned bills for Lower House electoral system reform. The method is aimed at better reflecting differences in regional populations in parliamentary seats.

The ruling bloc aims to seek support from opposition parties in a bid to get the bills enacted during the ongoing parliamentary session.

Lower House Speaker Tada-mori Oshima has proposed introducing the Adams’ method for redistributing seats to each prefecture based on the results of the national census, which is held every 10 years.

At a news conference Friday, LDP Secretary-General Sadakazu Tanigaki said that the party will accept the proposal.

The LDP hopes to reduce the number of Lower House single-seat districts by six, based on the results of the 2015 simple national census, and carry out rezoning so that maximum vote-value disparities will drop below two, sources familiar with the situation said.

The party then aims to implement drastic reforms based on the Adams’ method after the 2020 national census.

Kazuo Kitagawa, head of the political reform task force at Komeito, the LDP’s coalition partner, said his party takes the proposal seriously, dropping its call for introducing the method based on the 2015 census results.

Among opposition parties, the Democratic Party of Japan has been seeking to introduce the method based on the 2010 census results.

Officials from both the ruling and opposition parties are set to discuss the issue in a meeting with Oshima on Monday.

The ruling bloc may submit the planned reform bills independently if it fails to win support from opposition parties, informed sources said.