She was born in the town of Kahoku inside the Nishimurayama District of Yamagata, and grew up in a greengrocer's family.

[8] The next day, it was announced that Kibō no Tō would be standing Takatane Kiuchi, a businessman and CEO in the district against Yoshida and Ishihara.

[9] Despite the relative success of the CDP in beating Koike's party for second in the general election, Yoshida lost in what was mainly chalked up to a vote split in the opposition.

On 12 September 2020, Nippon Ishin no Kai announced it would field former Sanda City Council member Keiji Kasatani as their candidate for Tokyo's 8th district in the next general election.

On 28 September, the Japanese Communist Party announced it was also fielding a candidate for the district, former Suginami Assembly member Masatake Kamibo.

He cited that "Our party's candidate has been rooted in the local community for many years and thinks that she can fight on equal terms in a single-seat district.

[17] The JCP announced that Masatake had withdrawn, and the SDP Tokyo branch along with Reiwa Shinsengumi endorsed Yoshida.

[24] She placed fourth and was eliminated in the first round, with eventual winner Yoshihiko Noda appointing her as Shadow Minister of State for Gender Equality as a part of his Next Cabinet.