2021 Japanese general election in Southern Kanto

The 2021 Japanese general election in Southern Kanto were held on October 31, 2021, to elect the 55 representatives, one from each of 33 Electoral districts and 22 proportional seats.

Chiba 1st district
In the last general election, Kadoyama Hiroaki of the Liberal Democratic Party won his seat after a close race over Kaname Tajima, an incumbent candidate from the Kibō no Tō. In this general election, the Japanese Communist Party did not field any candidates and the opposition candidates were unified into Tajima. After a one-on-one battle, Tajima beat Kadoyama to regain his seat（Kadoyama won the seat through proportional representation and maintained his position as a member of the House of Representatives.）.

Chiba 2nd district
Kobayashi Takayuki, the incumbent minister of State for science and technology policy in the Kishida cabinet, was re-elected after beating other candidates by a large margin.

Chiba 3rd district
Current Chief Cabinet Secretary Hirokazu Matsuno was re-elected after defeating Kazumasa Okajima of the Constitutional Democratic Party (proportional representation block’s incumbent ). Unlike the last general election, Okajima failed to win a proportional representation seat.

Chiba 4th district
Yoshihiko Noda, a former Prime Minister and incumbent of the Constitutional Democratic Party, defeated Tetsuya Kimura of the Liberal Democratic Party by a large margin and fought again.Unlike the last general election, Kimura failed to win a proportional representation seat.