[8] Seiko deals with health issues in politics and a decline in birth rate, and she is the Minister in Charge of Women’s Empowerment.

[1] Following the resignation of Tokyo governor Naoki Inose on 19 December 2013, she was rumored to be a potential candidate for the gubernatorial election expected to be held in February 2014, along with Yuriko Koike, Hakubun Shimomura, Hideo Higashikokubaru and Yoichi Masuzoe.

[11] The LDP excluded her name from consideration in a December 20 telephone poll due to her responsibilities as head of the Japanese competitor delegation to the 2014 Winter Olympics.

[12] Seiko had to leave her position as one of two women in Prime Minister Yoshihide Suga's cabinet to accept her role in the 2020 Tokyo Olympics committee.

[13] It has been revealed that Hashimoto received 20.57 million yen in kickbacks from Liberal Democratic Party and Abe faction, which was not recorded in the income and expenditure report.

[14] In August 2014, Hashimoto became embroiled in accusations of sexual harassment[15] of Japanese male figure skater Daisuke Takahashi.

Weekly magazine Shukan Bunshun published a story with several photographs showing Hashimoto and Takahashi dancing at a party following the closing of the Sochi Winter Olympics.

Several magazines said that she hugged and kissed him due to their unequal power dynamics, because she was on the Olympic committee, a politician, and a former Olympian herself.

In contrast, Takahashi, known as the prince on ice in Japan, objected to the magazine's article and did not think that her behaviors are connected to sexual or power harassment.

Hashimoto replaced former Prime Minister Yoshirō Mori, who had earlier offered his resignation following comments he made at a committee meeting that were regarded as sexist.

She was evaluated to promote gender equality, increasing the ratio of the female directors by roughly 40% in the Olympic Organizing Committee (OOC).