新党さきがけ
Hatoyama ran for a seat in the Hokkaido 9th District and was elected to the House of Representatives in 1986 representing the ruling LDP. In 1993 he left the LDP to form the New Party Sakigake with Naoto Kan, Masayoshi Takemura and . He and Kan then left to join the newly formed Democratic Party of Japan (1996).