He was brought on as an associate by
José Severo Caballero, a Córdoba jurist who would be appointed president of the
Argentine Supreme Court in 1983 by President
Raúl Alfonsín. Following elections that year in which the UCR swept both national and Córdoba offices, Aguad was appointed Chief of Staff by Córdoba Mayor
Ramón Mestre. Aguad served in the board of directors of
La Voz del Interior (the leading Córdoba news daily), as well as of the University of Córdoba Foundation. He established
Amparo Legal (Legal Recourse), a
legal assistance office, in 1994, and later a law office. He presided over new provincial elections, and on December 10, was succeeded by a duly elected governor. Aguad was elected to the
Argentine Chamber of Deputies in 2005, and in 2007, his UCR colleagues elected him president of their caucus. He was a vocal opponent of
Resolution 125, which would have raised export
tariffs on a range of
agricultural raw materials, and advocated greater
revenue sharing benefits for the
provinces. He was one of five Congressmen honored with a Parliamentary Prize in 2008 by
Semanario Parlamentario (
Parliamentary Weekly), and during the 2009–10 congress, was the body's most frequent speaker. Aguad was elected First Vice President of the Chamber of Deputies (the body's second-highest ranking post) by his colleagues in December 2010. He obtained his party's nomination for
Governor of Córdoba ahead of
provincial elections on August 7. He was defeated, however, by former Governor
José Manuel de la Sota. ==References==