Tokyo 6th district is a constituency of the House of Representatives

House of Representatives of Japan

The is the lower house of the Diet of Japan. The House of Councillors of Japan is the upper house.The House of Representatives has 480 members, elected for a four-year term. Of these, 180 members are elected from 11 multi-member constituencies by a party-list system of proportional representation,...

 in the Diet of Japan

Diet of Japan

The is Japan's bicameral legislature. It is composed of a lower house, called the House of Representatives, and an upper house, called the House of Councillors. Both houses of the Diet are directly elected under a parallel voting system. In addition to passing laws, the Diet is formally...

 (national legislature). It is located in Tokyo

Tokyo

, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

, and consists of major parts of the City of Setagaya, one of Tokyo's 23 special wards

Special wards of Tokyo

The are 23 municipalities that together make up the core and the most populous part of Tokyo, Japan. Together, they occupy the land that was the city of Tokyo before it was abolished in 1943. The special wards' structure was established under the Japanese Local Autonomy Law and is unique to...

. With 2.18 times as many voters as Tokushima's 1st district

Tokushima's 1st district

Tokushima 1st district is a constituency of the House of Representatives in the Diet of Japan . It is located in Tokushima Prefecture on the island of Shikoku, and consists of the city of Tokushima and the village of Sanagōchi in the Myōdō District...

, it had the lowest electoral weight throughout Japan in the election of 2005. In 2007 the Supreme Court

Supreme Court of Japan

The Supreme Court of Japan , located in Chiyoda, Tokyo is the highest court in Japan. It has ultimate judicial authority to interpret the Japanese constitution and decide questions of national law...

 dismissed a claim that the election in this and other Tokyo districts was unconstitutional and thus invalid. As of September 2008, 481,801 eligible voters were registered in the district surpassed only by Chiba 4th district

Chiba 4th district

Chiba 4th district is a constituency of the House of Representatives in the Diet of Japan . It is located in Western Chiba and covers the city of Funabashi...

.

Before the electoral reform of 1994, Setagaya was part of Tokyo 3rd district, a three-member single non-transferable vote

Single non-transferable vote

The single non-transferable vote or SNTV is an electoral system used in multi-member constituency elections.- Voting :In any election, each voter casts one vote for one candidate in a multi-candidate race for multiple offices. Posts are filled by the candidates with the most votes...

 (SNTV) constituency. The post-reform single-member constituencies were used in the 1996 election for the first time.

Since its creation, the urban district had been dominated by opposition candidates until the landslide "postal privatization" election of 2005 when Liberal Democratic

Liberal Democratic Party (Japan)

The , frequently abbreviated to LDP or , is a centre-right political party in Japan. It is one of the most consistently successful political parties in the democratic world. The LDP ruled almost continuously for nearly 54 years from its founding in 1955 until its defeat in the 2009 election...

 candidate Takao Ochi

Takao Ochi

is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet . A native of Setagaya, Tokyo, he graduated from Keio University with a degree in economics in March 1986 and from École Supérieure des Sciences Économiques et Commerciales in France in...

 was able to defeat Democratic

Democratic Party of Japan

The is a political party in Japan founded in 1998 by the merger of several opposition parties. Its socially liberal platform is generally considered center-left in the Japanese political spectrum...

 incumbent Yōko Komiyama

Yoko Komiyama

is a Japanese politician of the Democratic Party of Japan, a member of the House of Representatives in the Diet . A native of Shibuya, Tokyo and graduate of Seijo University, she worked at the public broadcaster NHK from 1972 to 1998...

 by a slim margin. Komiyama was reelected via the Tokyo proportional representation block and ran again in Tokyo 6th district in the election of 2009

Japanese general election, 2009

A general election in Japan was held on August 30, 2009, for all 480 seats of the House of Representatives of Japan, the lower house of the Diet of Japan....

.

After Democratic representative Kōki Ishii

Koki Ishii

Kōki Ishii was a Japanese politician of the Democratic Party of Japan born in Setagaya, Tokyo.-Early life:...

 was stabbed to death in 2002 by a rightwing activist, a by-election was held on April 27, 2003.

Election results