Hara Takashi
Nakahashi was appointed to the cabinet of the Hara Takashi administration as Education Minister in 1918. While Education Minister, Nakahashi sought to expand the higher education system in Japan, including the creation of five more medical schools, 29 schools of pharmacy, and creating additional imperial universities. Following Hara’s assassination in 1921, Nakahashi continued as Education Minister in the cabinet of Takahashi Korekiyo. In 1924, together with Tokonami Takejirō, he joined the new "Seiyu Hontō", helping bring down the Takahashi administration, but returned to the "Rikken Seiyukai" in 1925.