The Shikoku proportional representation block () is one of eleven proportional representation (PR) "blocks", multi-member constituencies for the House of Representatives in the Diet of Japan. It consists of Shikoku region covering Tokushima, Kagawa, Ehime and Kōchi Prefectures. 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 shrunk 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, (Jiyūminshutō) DPJ: Democratic Party of Japan (Minshutō) Komeito (Kōmeitō) JCP: Japanese Communist Party, (Nihon Kyōsantō) SDP Social Democratic Party, Shakaiminshutō NFP: New Frontier Party, Shinshintō LP: Liberal Party, Jiyūtō NSP: New Socialist Party, Shin-shakaitō LL: Liberal League, Jiyū-rengō HRP: Happiness Realization Party, 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, The Senkyo: Results of general and by-elections for the House of Representatives 1890–2010 Shikoku region PR Shikoku