[17] Sanseitō gained international media attention during the 2022 House of Councillors election due to the party's Secretary General, Sohei Kamiya's antisemitic rhetoric during public appearances and campaign rallies.

Sohei Kamiya, a Sanseitō candidate in the national proportional representation block, won a seat.

[26][27] And, specifically in the 2022 Japanese House of Councillors election the party also proposed the "liberalisation of mask wearing" as their policy on coronavirus.

[15] Analysis found that as of 2022 their voter overlap with young people and child-rearing generation suffering from pandemic fatigue, especially in regions with lower vaccination rate.

[35] The party is against same-sex marriage, including civil unions[citation needed] and opposed the LGBT Understanding Promotion Act.

[36] According to Mina Okamura, a clinical psychologist and business psychology consultant, people who have been indifferent to politics and elections were interested in the keywords "anti-vaccine," "no mask," and "organic".