# Chiba 13th district

Chiba 13th district (千葉県第13区, Chiba-ken dai-ju-sanku or simply 千葉13区, Chiba-ju-sanku) is a single-member constituency of the House of Representatives in the national Diet of Japan located in Chiba Prefecture.

## Areas covered
### Since 2022

* Abiko
* Inzai
* Kamagaya
* Shiroi
* Tomisato
* Iba District

### 2017 - 2022

* Part of Funabashi
* Inzai
* Kamagaya
* Part of Kashiwa
** Former Shōnan area
* Shiroi
* Tomisato
* Iba District

### 2013 - 2017

* Part of Funabashi
* Inzai
* Kamagaya
* Part of Kashiwa
** Former Shōnan area
* Shiroi
* Tomisato
* Iba District

### 2002 - 2013

* Inzai
* Kamagaya
* Shiroi
* Tomisato
* Part of Higashi-Katsushika District
** Shōnan area
* Iba District

## List of representatives

| Election | Representative | Party | Notes |
| 2003 | Yukio Jitsukawa | LDP | |
| 2005 | Yukio Jitsukawa | LDP | |
| 2009 | Yasuhiko Wakai [ja] | Democratic | |
| 2012 | Takaki Shirasuka [ja] | LDP | |
| 2014 | Takaki Shirasuka [ja] | LDP | |
| 2017 | Takaki Shirasuka [ja] | LDP | Shirasuka left the LDP because of the scandal. |
| 2017 | Takaki Shirasuka [ja] | Independent | |
| 2021 | Hisashi Matsumoto [ja] | LDP | |
| 2024 | Hisashi Matsumoto [ja] | LDP | |

## Election Results
### 2024

2024 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Hisashi Matsumoto [ja] (Incumbent) | 96,024 | 43.77 | 1.30 |
| | CDP | Shin Miyakawa [ja] (Won PR seat) | 92,501 | 42.16 | 6.33 |
| | Sanseitō | Megumi Nakaya | 19,582 | 8.93 | New |
| | JCP | Sueto Kashiwazaki | 11,287 | 5.14 | N/A |
| Majority | Majority | Majority | 3,523 | 1.61 | |
| Registered electors | Registered electors | Registered electors | 417,408 | | |
| Turnout | Turnout | Turnout | | 54.02 | 0.47 |
| | LDP hold | LDP hold | LDP hold | LDP hold |

### 2021

2021 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Hisashi Matsumoto [ja] | 100,227 | 45.07 | 0.77 |
| | CDP | Shin Miyakawa [ja] | 79,687 | 35.83 | New |
| | Ishin | Kiyoshi Shimizu [ja] | 42,473 | 19.10 | New |
| Majority | Majority | Majority | 20,540 | 9.24 | |
| Registered electors | Registered electors | Registered electors | 416,857 | | |
| Turnout | Turnout | Turnout | | 54.49 | 3.70 |
| | LDP gain from Independent | LDP gain from Independent | LDP gain from Independent | LDP gain from Independent | LDP gain from Independent |

### 2017

2017 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Takaki Shirasuka [ja] (Incumbent) | 93,081 | 45.84 | 5.06 |
| | CDP | Shin Miyakawa [ja] (Won PR seat) | 57,431 | 28.28 | New |
| | Kibō no Tō | Tomohiko Mizuno [ja] | 31,887 | 15.70 | New |
| | JCP | Kazuko Saito | 20,679 | 10.18 | 4.70 |
| Majority | Majority | Majority | 35,650 | 17.56 | |
| Registered electors | Registered electors | Registered electors | 410,959 | | |
| Turnout | Turnout | Turnout | | 50.79 | 0.11 |
| | LDP hold | LDP hold | LDP hold | LDP hold |

### 2014

2014 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Takaki Shirasuka [ja] (Incumbent) | 96,294 | 50.90 | 9.88 |
| | Democratic | Yasuhiko Wakai [ja] | 64,725 | 34.22 | 6.56 |
| | JCP | Katsutoshi Nakagawa | 28,147 | 14.88 | 7.36 |
| Majority | Majority | Majority | 31,569 | 16.68 | |
| Registered electors | Registered electors | Registered electors | 388,076 | | |
| Turnout | Turnout | Turnout | | 50.90 | 7.24 |
| | LDP hold | LDP hold | LDP hold | LDP hold |

### 2012

2012 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Takaki Shirasuka [ja] | 75,152 | 41.02 | 2.11 |
| | Democratic | Yasuhiko Wakai [ja] (Incumbent) (Won PR seat) | 50,666 | 27.66 | 29.36 |
| | Restoration | Tamotsu Shiiki [ja] (Won PR seat) | 40,471 | 22.09 | New |
| | JCP | Tomoyuki Satake | 13,769 | 7.52 | N/A |
| | Happiness Realization | Yuzo Furukawa | 3,134 | 1.71 | 0.36 |
| Majority | Majority | Majority | 24,486 | 13.36 | |
| Registered electors | Registered electors | Registered electors | 329,571 | | |
| Turnout | Turnout | Turnout | | 58.14 | 7.92 |
| | LDP gain from Democratic | LDP gain from Democratic | LDP gain from Democratic | LDP gain from Democratic | LDP gain from Democratic |

### 2009

2009 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Yasuhiko Wakai [ja] | 118,062 | 57.02 | 18.42 |
| | LDP | Yukio Jitsukawa (Incumbent) | 80,573 | 38.91 | 15.50 |
| | Happiness Realization | Hiroaki Ishii | 4,293 | 2.07 | New |
| | Independent | Kenzo Tachibana | 4,127 | 2.00 | New |
| Majority | Majority | Majority | 37,489 | 18.11 | |
| Registered electors | Registered electors | Registered electors | 321,969 | | |
| Turnout | Turnout | Turnout | | 66.06 | 0.35 |
| | Democratic gain from LDP | Democratic gain from LDP | Democratic gain from LDP | Democratic gain from LDP | Democratic gain from LDP |

### 2005

2005 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Yukio Jitsukawa (Incumbent) | 106,994 | 54.41 | 6.11 |
| | Democratic | Yasuhiko Wakai [ja] | 75,909 | 38.60 | 6.33 |
| | JCP | Choei Ino | 13,756 | 6.99 | 0.22 |
| Majority | Majority | Majority | 31,085 | 15.81 | |
| Registered electors | Registered electors | Registered electors | 305,244 | | |
| Turnout | Turnout | Turnout | | 65.71 | 7.64 |
| | LDP hold | LDP hold | LDP hold | LDP hold |

### 2003

2003 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Yukio Jitsukawa | 81,625 | 48.30 | New |
| | Democratic | Yasuhiko Wakai [ja] (Won PR seat) | 75,927 | 44.93 | New |
| | JCP | Choei Ino | 11,435 | 6.77 | New |
| Majority | Majority | Majority | 5,698 | 3.37 | |
| Registered electors | Registered electors | Registered electors | 299,034 | | |
| Turnout | Turnout | Turnout | | 58.07 | |
| | LDP win (new seat) | LDP win (new seat) | LDP win (new seat) | LDP win (new seat) |