# Osaka 10th district

Ōsaka 10th district (大阪府第10区, Ōsaka-fu daijikku or 大阪10区, Ōsaka-jikku) is a single-member electoral district of the House of Representatives, the lower house of the national Diet of Japan. It is located in northeastern Osaka and consists of Takatsuki city and Shimamoto town, the only remaining municipality of Mishima county. As of 2016, 321,805 eligible voters were registered in the district.
A former representative for the district was Kiyomi Tsujimoto, policy chief of the Constitutional Democratic Party. Tsujimoto had originally been elected in 2000 and 2009 for the Social Democratic Party. She left in 2010 after disagreeing with her party's departure from the Democrat-led ruling coalition. Kenta Matsunami is the previous member of the district. In 2012, he ran for the Japan Restoration Party of former Osaka governor and mayor Tōru Hashimoto that won twelve district seats in the prefecture. Tsujimoto failed to gain reelection in 2021.
Before the electoral reform of the 1990s, the area had been part of the five-member Osaka 3rd district.

## List of representatives

| Representative | Party | Dates | Notes |
| Kazuo Ishigaki | NFP | 1996 – 1998 | A former professional baseball player and coach, Takatsuki municipal and Osaka prefectural assemblyman for Kōmeitō Joined the Liberal Party after the dissolution of the NFP, then returned to re-established/"New" Kōmeitō |
| Kazuo Ishigaki | LP | 1998 – 2000 | A former professional baseball player and coach, Takatsuki municipal and Osaka prefectural assemblyman for Kōmeitō Joined the Liberal Party after the dissolution of the NFP, then returned to re-established/"New" Kōmeitō |
| Kazuo Ishigaki | NKP | 2000 | A former professional baseball player and coach, Takatsuki municipal and Osaka prefectural assemblyman for Kōmeitō Joined the Liberal Party after the dissolution of the NFP, then returned to re-established/"New" Kōmeitō |
| Kiyomi Tsujimoto | SDP | 2000 – 2002 | Resigned over a scandal involving public funding for non-existent secretaries |
| Kenta Matsunami | LDP | 2002 – 2003 | Failed re-election in the Kinki PR block |
| Miyoko Hida | DPJ | 2003 – 2005 | Failed re-election in the Kinki PR block |
| Kenta Matsunami | LDP | 2005 – 2009 | Re-elected in the Kinki PR block |
| Kiyomi Tsujimoto | SDP | 2009 – 2010 | Left SDP and became independent member of the DPJ parliamentary group in 2010. Joined DPJ in 2011 Re-elected in the Kinki PR block |
| Kiyomi Tsujimoto | Ind | 2010 – 2011 | Left SDP and became independent member of the DPJ parliamentary group in 2010. Joined DPJ in 2011 Re-elected in the Kinki PR block |
| Kiyomi Tsujimoto | DPJ | 2011 – 2012 | Left SDP and became independent member of the DPJ parliamentary group in 2010. Joined DPJ in 2011 Re-elected in the Kinki PR block |
| Kenta Matsunami | JRP | 2012 – 2014 | |
| Kiyomi Tsujimoto | DPJ | 2014 – 2016 | Failed re-election in the Kinki PR block |
| Kiyomi Tsujimoto | DP | 2016 – 2017 | Failed re-election in the Kinki PR block |
| Kiyomi Tsujimoto | CDP | 2017 – 2021 | Failed re-election in the Kinki PR block |
| Taku Ikeshita | Ishin | 2021 – | Former member of the Osaka Prefectural Assembly |

## Election results

2021 :
| Party | Party | Candidate | Votes | % | ±% |
| | Ishin | Taku Ikeshita | 80,932 | 40.32 | 14.96 |
| | CDP | Kiyomi Tsujimoto | 66,943 | 33.35 | 9.42 |
| | LDP | Kazuhide Ōkuma endorsed by Kōmeitō) | 52,843 | 26.33 | 5.54 |
| Majority | Majority | Majority | 13,989 | 6.97 | |
| Turnout | Turnout | Turnout | | 63.32 | 7.24 |
| | Ishin gain from CDP | Ishin gain from CDP | Swing | | |
2017 :
| Party | Party | Candidate | Votes | % | ±% |
| | CDP | Kiyomi Tsujimoto | 75,788 | 42.77 | 8.42 |
| | LDP | Kazuhide Ōkuma (elected by PR, endorsed by Kōmeitō) | 56,483 | 31.87 | 2.29 |
| | Ishin | Kenta Matsunami | 44,938 | 25.36 | 2.75 |
| Majority | Majority | Majority | 19,305 | 10.90 | |
| Turnout | Turnout | Turnout | | 56.08 | 1.98 |
| | CDP hold | CDP hold | Swing | 3.07 | |
2014 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kiyomi Tsujimoto | 61,725 | 34.35 | 1.06 |
| | LDP | Kazuhide Ōkuma (elected by PR, endorsed by Kōmeitō) | 53,160 | 29.58 | 6.55 |
| | Ishin | Kenta Matsunami (elected by PR) | 50,516 | 28.11 | 8.08 |
| | JCP | Kazuhito Asanuma | 14,318 | 7.97 | 0.49 |
| Majority | Majority | Majority | 8,565 | 4.77 | |
| Turnout | Turnout | Turnout | | 58.06 | 5.71 |
| | Democratic gain from Ishin | Democratic gain from Ishin | Swing | 4.57 | |
2012 :
| Party | Party | Candidate | Votes | % | ±% |
| | Restoration | Kenta Matsunami (endorsed by YP) | 71,117 | 36.19 | 3.01 |
| | Democratic | Kiyomi Tsujimoto (elected by PR, endorsed by PNP) | 65,411 | 33.29 | 17.24 |
| | LDP | Kazuhide Ōkuma | 45,261 | 23.03 | N/A |
| | JCP | Kazuhito Asanuma | 14,706 | 7.48 | 1.01 |
| Majority | Majority | Majority | 5,706 | 2.90 | |
| Turnout | Turnout | Turnout | | 63.77 | 6.79 |
| | Restoration gain from Democratic | Restoration gain from Democratic | Swing | 7.12 | |
2009 :
| Party | Party | Candidate | Votes | % | ±% |
| | Social Democratic | Kiyomi Tsujimoto (endorsed by DPJ and PNP) | 109,693 | 50.53 | 19.00 |
| | LDP | Kenta Matsunami (elected by PR, endorsed by Kōmeitō) | 85,106 | 39.20 | 0.78 |
| | JCP | Kazuhito Asanuma | 18,425 | 8.49 | 2.66 |
| | Happiness Realization | Hiroshi Tsutsui | 3,863 | 1.78 | N/A |
| Majority | Majority | Majority | 24,587 | 11.33 | |
| Turnout | Turnout | Turnout | 222,606 | 70.56 | 0.02 |
| | Social Democratic gain from LDP | Social Democratic gain from LDP | Swing | 9.11 | |
2005 :
| Party | Party | Candidate | Votes | % |
| | LDP | Kenta Matsunami | 83,607 | 38.42 |
| | Social Democratic | Kiyomi Tsujimoto (elected by PR) | 68,614 | 31.53 |
| | Democratic | Miyoko Hida | 52,703 | 24.22 |
| | JCP | Kazuhito Asanuma | 12,703 | 5.83 |
| Turnout | Turnout | Turnout | 220,810 | 70.54 |
2003 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Miyoko Hida | 83,077 | 47.1 |
| | LDP | Kenta Matsunami | 68,646 | 38.9 |
| | JCP | Etsuko Sugano | 22,976 | 13.0 |
| | Independent | Mamoru Shinbaru | 1,600 | 0.9 |
| Turnout | Turnout | Turnout | 180,710 | 57.99 |
October 27, 2002 by-election :
| Party | Party | Candidate | Votes | % |
| | LDP | Kenta Matsunami | 43,252 | 34.2 |
| | Independent | Yasuto Yoshida | 36,328 | 28.8 |
| | JCP | Etsuko Sugano | 23,795 | 18.8 |
| | Democratic | Toshio Emura | 15,876 | 12.6 |
| | Koizumi no Kai | Takahiro Kitaoka | 2,722 | 2.2 |
| | Independent | Yōichi Mizutani | 2,453 | 0.9 |
| | Independent | Hitoshi Takaya | 1,516 | 1.2 |
| | Independent | Toshifumi Nishimura | 404 | 0.3 |
| Turnout | Turnout | Turnout | 129,154 | 41.45 |
2000 :
| Party | Candidate | Votes | % |
| Social Democratic | Kiyomi Tsujimoto | 55,839 | 29.7 |
| LDP | Kazuo Ishigaki | 55,108 | 29.3 |
| Democratic | Miyoko Hida (elected by PR) | 52,598 | 28.0 |
| JCP | Manabu Ōmine | 21,957 | 11.7 |
| Independent | Hitoshi Takaya | 2,489 | 1.3 |
1996 :
| Party | Party | Candidate | Votes | % |
| | New Frontier | Kazuo Ishigaki | 53,623 | 31.4 |
| | LDP | Shōnosuke Hayashi | 45,655 | 26.7 |
| | Democratic | Miyoko Hida (elected by PR) | 33,802 | 19.8 |
| | JCP | Katsunori Nagao | 29,022 | 17.0 |
| | Independent | Fukuko Ozawa | 6,368 | 3.7 |
| | Liberal League | Takashi Onoda | 2,484 | 1.5 |
| Turnout | Turnout | Turnout | 175,029 | 57.02 |