about two-thirds of constituencies, competing against each other in the rest), 37.7 %, 65 seats (22.5%) Ishin: 94 candidates, 8.4%, 16 seats (5.5%) Independents: 80 candidates (including several endorsed by the LDP) 3.9 %, 12 seats (4.2%, including two winners retroactively nominated by the LDP) Others (aggregate) 36 candidates, 0.4 %, no seats 2021 House of Councillors by-elections One week before the 2021 House of Representatives general election, by-elections to the House of Councillors were held in Yamaguchi and Shizuoka. Former proportional district member Tsuneo Kitamura (LDP – Kōmeitō) easily held conservative stronghold Yamaguchi for the ruling coalition against candidates from JCP and [anti-]NHK party, former prefectural assembly member Shinnosuke Yamazaki (independent – CDP, DPFP) narrowly won Shizuoka for the centre-left opposition against candidates from LDP and JCP. 2021 by- & repeat elections to both houses The centre-left opposition won all three April 2021 elections to the Diet: In the repeat election to the House of Councillors in Hiroshima following the invalidation of Anri Kawai's 2019 election, opposition-supported announcer Haruko Miyaguchi (I/O – CDP, DPFP, SDP) defeated former METI bureaucrat Hidenori Nishita (LDP – Kōmeitō). In the Nagano by-election to the House of Councillors, Jirō Hata (CDP – JCP, DPFP, SDP) beat former H.R. member Yutaka Komatsu (LDP – Kōmeitō) to fill his late brother's seat. In the Hokkaidō 2 by-election to the House of Representatives caused by the resignation of Takamori Yoshikawa (LDP) for health reasons during the Akita Foods scandal, former member Kenkō Matsuki (CDP – DPFP, SDP) won safely with 43,7 % of the vote against a field of several independent/third-pillar candidates, the ruling parties did not contest the race directly and endorsed no candidate. 2020 House of Representatives by-election The 26 April by-election in Shizuoka's 4th district was won by former prefectural assemblyman Yōichi Fukazawa (LDP – Kōmeitō). With 61% of the vote, he easily beat opposition candidate Ken Tanaka (I – CDP, DPFP, JCP, SDP; 35%), a former prefectural assembly member from Tokyo, and two other candidates to fill the seat vacated by Yoshio Mochizuki's death in December. 2019 House of Councillors by-election The 27 October by-election in Saitama to fill the vacancy created by Motohiro Ōno's (DPFP) resignation was won by previous governor and former DPJ House of Representatives member Kiyoshi Ueda who had been an independent since his move from national to prefectural politics in 2003. The only other candidate was Takashi Tachibana