1993 Japanese general election in the context of "Single non-transferable vote"

Sanae Takaichi (born 7 March 1961) is a Japanese politician who is serving as Prime Minister of Japan and President of the Liberal Democratic Party since 2025. She is the first woman to hold either of these positions. A member of the House of Representatives from 1993 to 2003 and since 2005, she also held several ministerial posts during the premierships of Shinzo Abe and Fumio Kishida.

Born and raised in Nara Prefecture, Takaichi graduated from Kobe University and worked as an author, legislative aide, and broadcaster before beginning her political career. Elected as an independent to the House of Representatives in the 1993 general election, she joined the Liberal Democratic Party (LDP) in 1996. A protégé of Prime Minister Abe, she held various positions during Abe's premiership, most notably as Minister for Internal Affairs and Communications. She was a candidate in the 2021 LDP leadership election, but was eliminated before the runoff, placing third. From 2022 to 2024, during Fumio Kishida's premiership, she served as the Minister of State for Economic Security.

Shinzo Abe (21 September 1954 – 8 July 2022) was a Japanese statesman who served as Prime Minister of Japan and President of the Liberal Democratic Party (LDP) from 2006 to 2007 and again from 2012 to 2020. He was the longest-serving prime minister in Japanese history, serving for nearly nine years.

Born in Tokyo, Abe was a member of the Satō–Kishi–Abe family as the son of LDP politician Shintaro Abe and grandson of prime minister Nobusuke Kishi. He graduated from Seikei University and attended the University of Southern California before working in industry and party posts, and was elected to the House of Representatives in 1993. Abe was LDP secretary-general from 2003 to 2004 and Chief Cabinet Secretary under Junichiro Koizumi from 2005 to 2006, when he replaced Koizumi as prime minister. Abe became Japan's youngest post-war premier, and the first born after World War II. A staunch conservative and member of the Nippon Kaigi organization, which holds negationist views on Japanese history, Abe took right-wing stances including downplaying atrocities in textbooks, denying government coercion in the recruitment of comfort women during the war, and seeking revision of Article 9 of the Constitution. In 2007, he initiated the Quadrilateral Security Dialogue with the US, Australia, and India, aimed at resisting China's rise as a superpower. He resigned as premier that year due to his government's unpopularity and illness.

Fumio Kishida (born 29 July 1957) is a Japanese politician who served as Prime Minister of Japan and President of the Liberal Democratic Party from 2021 until his resignation in 2024. He has represented Hiroshima 1st in the House of Representatives since 1996. Before his premiership, he was the Minister for Foreign Affairs from 2012 to 2017, as acting Minister of Defense in 2017, and he also chaired the LDP Policy Research Council from 2017 to 2020.

Born into a political family, Kishida spent part of his childhood in the United States, where he attended elementary school in New York City. After beginning his career in finance, Kishida entered politics and was elected to the House of Representatives at the 1993 general election as a member of the LDP. Kishida was appointed to Minister of State for Special Missions in the premiership of Shinzo Abe and Yasuo Fukuda from 2007 to 2008, and was appointed Minister for Foreign Affairs in 2012 after Abe regained the premiership following the 2012 general election, serving for five years and becoming the longest-serving Foreign Affairs Minister in Japanese history. Kishida resigned from the Abe cabinet in 2017 in order to head the LDP's Policy Research Council. Kishida also assumed leadership of the LDP's more moderate Kōchikai faction in 2012 following the retirement of faction leader Makoto Koga, a position he held until his resignation in 2023. Long considered a potential future prime minister, Kishida ran in the 2020 LDP presidential election, but lost to Yoshihide Suga. He ran again for the party leadership in 2021, this time winning in a second round run-off against opponent Taro Kono. Kishida was confirmed as prime minister by the National Diet four days later on 4 October 2021.

The 1955 system (Japanese: 55年体制, Hepburn: 55-nen Taisei), also known as the one-and-a-half party system, is a term used by scholars to describe the dominant-party system that has existed in Japan since 1955, in which the Liberal Democratic Party (LDP) has held by itself or in coalition with Komeito (from 1999 to 2025) a government nearly uninterrupted, with opposition parties largely incapable of forming significant or long lasting alternatives, other than for brief stints in 1993–1994 and 2009–2012. The terms 1955 system and the one-and-a-half party system are credited to Junnosuke Masumi [ja], who described the 1955 system as "a grand political dam into which the history of Japanese politics surge".

The years of Japan under the 1955 regime witnessed high economic growth, leading to the dominance of the ruling party in the Diet, with an undergirded tight connection between the bureaucracy and the business sector. Due to a series of LDP scandals and the 1992 burst of the Japanese asset price bubble, the LDP lost its majority in the House of Representatives in the 1993 general election, which initially signalled the end of the 1955 system. However, the left-wing Japan Socialist Party, the long-time opposition which finally gained a majority, would soon lose much of its support after it decided to form a coalition government with the arch-rival LDP just a year later, leading to the JSP being refounded as the SDP in 1996, and its coalition partner regaining power. The LDP briefly lost power again in 2009 to the now defunct Democratic Party of Japan before regaining it in 2012, retaining power up to the present day. Nevertheless, it lost its majority in the House of Representatives in the 2024 general election, and its majority in the House of Councillors in the 2025 election, forcing it to run a minority government for the first time.

Kiichi Miyazawa (宮澤 喜一, Miyazawa Kiichi; 8 October 1919 – 28 June 2007) was a Japanese politician who served as prime minister of Japan from 1991 to 1993.

Born in Tokyo, Miyazawa graduated from Tokyo Imperial University with a law degree, and in 1942 joined the Ministry of Finance. He was first elected to the National Diet in 1953 and held a number of prominent posts, including international trade and industry minister under Eisaku Sato, foreign minister under Takeo Miki, director of the Economic Planning Agency under Takeo Fukuda, chief cabinet secretary under Yasuhiro Nakasone, and finance minister under Noboru Takeshita. Miyazawa became prime minister in 1991, but was forced to resign after the 1993 election after a failure to pass political reforms caused his Liberal Democratic Party to face its first defeat in a national election since its formation in 1955. Miyazawa later returned as finance minister from 1999 to 2001 in the cabinets of Keizō Obuchi and Yoshirō Mori.