Ichirō Hatoyama
Uehara served as parliamentary councilor for the Ministry of Communications in 1924 under Prime Minister Katō Takaaki, and parliamentary councilor for the Ministry of Foreign Affairs in 1926 under Prime Minister Tanaka Giichi. In 1932–1936, Uehara was the Vice-Chair of the House of Representatives. In the 1939 schism of the Rikken Seiyuto, Uehara sided with the "orthodox" faction led by Ichirō Hatoyama.