The Shikoku proportional representation block () is one of eleven

proportional representation Proportional representation (PR) refers to any electoral system under which subgroups of an electorate are reflected proportionately in the elected body. The concept applies mainly to political divisions (Political party, political parties) amon ...

(PR) "blocks", multi-member constituencies for the

House of Representatives House of Representatives is the name of legislative bodies in many countries and sub-national entities. In many countries, the House of Representatives is the lower house of a bicameral legislature, with the corresponding upper house often ...

in the

Diet of Japan , transcription_name = ''Kokkai'' , legislature = 215th Session of the National Diet , coa_pic = Flag of Japan.svg , house_type = Bicameral , houses = , foundation=29 November 1890(), leader1_type ...

. It consists of

Shikoku region is the smallest of the four main islands of Japan. It is long and between at its widest. It has a population of 3.8 million, the least populated of Japan's four main islands. It is south of Honshu and northeast of Kyushu. Shikoku's anc ...

covering

Tokushima is a Prefectures of Japan, prefecture of Japan located on the island of Shikoku. Tokushima Prefecture has a population of 682,439 (1 February 2025) and has a geographic area of 4,146 Square kilometre, km2 (1,601 sq mi). Tokushima Prefecture b ...

, Kagawa,

Ehime is a prefecture of Japan located on the island of Shikoku. Ehime Prefecture has a population of 1,334,841 and a geographic area of 5,676 km2 (2,191 sq mi). Ehime Prefecture borders Kagawa Prefecture to the northeast, Tokushima Prefecture to th ...

and

Kōchi Prefecture is a prefecture of Japan located on the island of Shikoku. Kōchi Prefecture has a population of 669,516 (1 April 2023) and has a geographic area of 7,103 km2 (2,742 sq mi). Kōchi Prefecture borders Ehime Prefecture to the northwest and Tok ...

s. Following the introduction of proportional voting it elected seven representatives in the 1996 general election. When the total number of PR seats was reduced from 200 to 180, the Shikoku PR block shrank to six seats.

Summary of results

With a district magnitude of six, Shikoku is the smallest PR block. The vote share necessary to obtain a seat is usually well above ten percent. In three elections after the consolidation of the LDP-DPJ-party system by the merger of the LP into the DPJ in 2001, only the top three parties were able to win seats in Shikoku. In 2012, the LDP recorded its worst result since the introduction of proportional party list voting and the DPJ vote share crashed by more than 25 percentage points, the newly created Japan Restoration Party managed to gain two proportional seats in Shikoku. Party names are abbreviated as follows (Romanisation of Japanese name in brackets): * LDP:

Liberal Democratic Party Several political parties from around the world have been called the Liberal Democratic Party, Democratic Liberal Party or Liberal Democrats. These parties have usually followed liberalism as ideology, although they can vary widely from very progr ...

, ''(Jiyūminshutō)'' * DPJ:

Democratic Party of Japan The was a Centrism, centristThe Democratic Party of Japan was widely described as centrist: * * * * * * * to Centre-left politics, centre-left, Liberalism, liberal or Social liberalism, social-liberal List of political parties in Japan, ...

''(Minshutō)'' *

Komeito , formerly New Komeito (NKP) and commonly referred to as simply Komei, is a political party in Japan founded by the leader of Soka Gakkai, Daisaku Ikeda, in 1964. It is generally considered centrist and socially conservative. Since 2012, i ...

''(Kōmeitō)'' * JCP:

Japanese Communist Party The is a communist party in Japan. Founded in 1922, it is the oldest political party in the country. It has 250,000 members as of January 2024, making it one of the largest non-governing communist parties in the world. The party is chaired ...

, ''(Nihon Kyōsantō)'' * SDP

Social Democratic Party The name Social Democratic Party or Social Democrats has been used by many political parties in various countries around the world. Such parties are most commonly aligned to social democracy as their political ideology. Active parties Form ...

, ''Shakaiminshutō'' * NFP: New Frontier Party, ''Shinshintō'' * LP:

Liberal Party The Liberal Party is any of many political parties around the world. The meaning of ''liberal'' varies around the world, ranging from liberal conservatism on the right to social liberalism on the left. For example, while the political systems ...

, ''Jiyūtō'' * NSP: New Socialist Party, ''Shin-shakaitō'' * LL: Liberal League, ''Jiyū-rengō'' * HRP:

Happiness Realization Party The , abbreviated as Kōfuku (), is a Japanese political party founded by Ryuho Okawa on 23 May 2009. The HRP is the political wing of the conservative Happy Science religious movement. Okawa was the president of the party until his death on 2 ...

, ''Kōfuku-jitsugen-tō''

List of representatives

''Note: Party affiliations as of election day.''

Election results

2014 general election

2012 general election

2009 general election

References

JANJAN ''JANJAN'' (), short for ''Japan Alternative News for Justices and New Cultures'' (), was a Japanese online newspaper started by Ken Takeuchi, journalist and former mayor of Kamakura, Kanagawa , officially , is a Cities of Japan, city of Kanagawa ...

, The Senkyo
Results of general and by-elections for the House of Representatives 1890–2010
{{coord missing, Japan Shikoku region PR Shikoku