Don Emiliano moved always politically in the "radical" sector of liberalism. He was part of the judicial branch and President of the Supreme Court of Justice on 28 November 1890. In February 1895, he joined the unified Congress, led by Benigno Ferreira. He served in the Liberal Party, being part of the Congress and on 19 December 1904, joined the Administration of Juan Bautista Gaona as Minister of Finance of Paraguay and served in the same function also during the government of Cecilio Báez, resigning on 28 April 1906, in order to join Ferreira in his route to the Presidency.