Chiba 4th district is a constituency of the House of Representatives in the Diet of Japan (national legislature). It is located in Western Chiba and covers the city of Funabashi. As of 2012, 497,350 eligible voters were registered in the district making it in the 2009 and 2012 general elections the district with the lowest electoral weight throughout Japan at more than two times as many voters as the district with the highest electoral weight, Kōchi 3.
Before the electoral reform of 1994, Funabashi was part of Chiba 1st district where four Representatives had been elected by single non-transferable vote.
Democrat Yoshihiko Noda has represented Chiba 4th district since 2000 after initially losing it as a candidate for the New Frontier Party by 105 votes to Liberal Democrat Shōichi Tanaka in 1996.
Election results
In 2009, Yoshihiko Noda's candidacy was formally supported by the People's New Party, Mikio Fujita by New Komeito.