# Saitama 4th district

Saitama 4th district (埼玉県第4区, Saitama-ken dai-yonku or simply 埼玉4区, Saitama-ken yonku) is a single-member constituency of the House of Representatives in the national Diet of Japan located in Saitama Prefecture.

## Areas covered
### since 2002

* Asaka
* Niiza
* Shiki
* Wakō

### 1994-2002

* Asaka
* Niiza
* Shiki
* Wakō
* Toda

## List of representatives

| Election | Representative | Party |
| 1996 | Kiyoshi Ueda | New Frontier |
| 1996 | Kiyoshi Ueda | From Five |
| 1996 | Kiyoshi Ueda | Good Governance |
| 2000 | Kiyoshi Ueda | Democratic |
| 2003 | Hideo Jinpu | Democratic |
| 2005 | Chuko Hayakawa | Liberal Democratic |
| 2009 | Hideo Jinpu | Democratic |
| 2012 | Mayuko Toyota | Liberal Democratic |
| 2014 | Mayuko Toyota | Liberal Democratic |
| 2014 | Mayuko Toyota | Independent |
| 2017 | Yasushi Hosaka | Liberal Democratic |
| 2021 | Yasushi Hosaka | Liberal Democratic |
| 2024 | Yasushi Hosaka | Liberal Democratic |

## Election results
### 2024

2024 :
| Party | Party | Candidate | Votes | % | ±% |
| | LDP | Yasushi Hosaka (incumbent) | 82,125 | 41,8 | 10.5 |
| | DPP | Mitsuhiro Kishida (won PR seat) | 52,728 | 26.8 | 3.4 |
| | Ishin | Yasuyuki Watanabe | 34,048 | 17.3 | |
| | JCP | Kaoru Kudō | 27,763 | 14.1 | 2.9 |
| Registered electors | Registered electors | Registered electors | 389,142 | | |
| Turnout | Turnout | Turnout | | 52,05 | 2.44 |
| | LDP hold | LDP hold | LDP hold | LDP hold |

### 2021

2021 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic (endorsed by Komeito) | Yasushi Hosaka (incumbent) | 107,135 | 52.26 | |
| | DPP | Katsuhiko Asano | 47,863 | 23.35 | New |
| | Communist | Kaoru Kudo | 34,897 | 17.02 | |
| | Independent | Nobuhiko Endō | 11,733 | 5.72 | New |
| | Independent | Hiroki Ogasawara | 3,358 | 1.64 | N/A |
| Majority | Majority | Majority | 59,272 | 28.91 | |
| Registered electors | Registered electors | Registered electors | 386,796 | | |
| Turnout | Turnout | Turnout | | 54.49 | 0.43 |
| | LDP hold | LDP hold | LDP hold | LDP hold |

### 2017

2017 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic (endorsed by Komeito) | Yasushi Hosaka | 74,287 | 37.41 | |
| | Kibō no Tō | Yoshinori Yoshida | 50,165 | 25.27 | New |
| | Communist | Hideyoshi Asaka | 29,125 | 14.67 | |
| | Innovation | Hitoshi Aoyagi [ja] | 23,362 | 11.77 | New |
| | Independent | Mayuko Toyota (incumbent) | 21,614 | 10.89 | New |
| Majority | Majority | Majority | 24,122 | 12.14 | |
| Registered electors | Registered electors | Registered electors | 376,437 | | |
| Turnout | Turnout | Turnout | | 54.06 | 0.72 |
| | LDP gain from Independent | LDP gain from Independent | LDP gain from Independent | LDP gain from Independent | LDP gain from Independent |

### 2014

2014 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic (endorsed by Komeito) | Mayuko Toyota (incumbent) | 88,730 | 48.11 | |
| | Democratic | Hideo Jinpu | 62,062 | 33.65 | |
| | Communist | Haruko Sakurai | 33,646 | 18.24 | |
| Majority | Majority | Majority | 26,668 | 14.46 | |
| Registered electors | Registered electors | Registered electors | 360,274 | | |
| Turnout | Turnout | Turnout | | 53.34 | 4.69 |
| | LDP hold | LDP hold | LDP hold | LDP hold |

### 2012

2012 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic (endorsed by Komeito) | Mayuko Toyota | 71,061 | 35.94 | |
| | Democratic (endorsed by PNP) | Hideo Jinpu (incumbent) | 53,366 | 26.99 | |
| | Restoration | Hitoshi Aoyagi [ja] | 46,303 | 23.42 | New |
| | Communist | Haruko Sakurai | 23,360 | 11.82 | |
| | Independent | Hiroki Ogasawara | 3,617 | 1.83 | New |
| Majority | Majority | Majority | 17,695 | 8.95 | |
| Registered electors | Registered electors | Registered electors | 355,100 | | |
| Turnout | Turnout | Turnout | | 58.03 | 7.86 |
| | 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 | Hideo Jinpu (PR seat incumbent) | 121,137 | 54.25 | |
| | Liberal Democratic | Chuko Hayakawa (incumbent) | 74,889 | 33.54 | |
| | Communist | Haruko Sakurai | 23,966 | 10.73 | |
| | Happiness Realization | Takemitsu Mizuno | 3,311 | 1.48 | New |
| Majority | Majority | Majority | 46,248 | 20.71 | |
| Registered electors | Registered electors | Registered electors | 346,769 | | |
| Turnout | Turnout | Turnout | | 65.89 | 0.94 |
| | 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 | % | ±% |
| | Liberal Democratic | Chuko Hayakawa (PR seat incumbent) | 103,366 | 48.78 | |
| | Democratic | Hideo Jinpu (incumbent) (won PR seat) | 86,229 | 40.69 | |
| | Communist | Haruko Sakurai | 22,322 | 10.53 | |
| Majority | Majority | Majority | 17,137 | 8.09 | |
| Registered electors | Registered electors | Registered electors | 333,735 | | |
| Turnout | Turnout | Turnout | | 64.95 | 11.35 |
| | LDP gain from Democratic | LDP gain from Democratic | LDP gain from Democratic | LDP gain from Democratic | LDP gain from Democratic |

### 2003

2003 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Hideo Jinpu | 81,367 | 48.00 | |
| | Liberal Democratic | Chuko Hayakawa (won PR seat) | 69,625 | 41.07 | |
| | Communist | Sumiko Ayabe | 18,527 | 10.93 | |
| Majority | Majority | Majority | 11,742 | 6.93 | |
| Turnout | Turnout | Turnout | | 53.60 | 2.49 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 2000

2000 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kiyoshi Ueda (incumbent) | 106,131 | 49.30 | New |
| | Liberal Democratic | Chuko Hayakawa | 70,062 | 32.55 | |
| | Communist | Sumiko Ayabe | 39,069 | 18.15 | |
| Majority | Majority | Majority | 36,069 | 16.75 | |
| Turnout | Turnout | Turnout | | 56.09 | 5.36 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### 1996

1996 :
| Party | Party | Candidate | Votes | % | ±% |
| | New Frontier | Kiyoshi Ueda | 72,420 | 39.25 | New |
| | Liberal Democratic | Chuko Hayakawa | 46,869 | 25.40 | New |
| | Communist | Sumiko Ayabe | 33,670 | 18.25 | New |
| | Democratic | Satoshi Ishizuka | 28,401 | 15.39 | New |
| | Liberal League | Ryusuke Hayakawa | 3,140 | 1.70 | New |
| Majority | Majority | Majority | 25,551 | 13.85 | |
| Turnout | Turnout | Turnout | | 50.73 | |
| | New Frontier win (new seat) | New Frontier win (new seat) | New Frontier win (new seat) | New Frontier win (new seat) |