Alfredo Cornejo studied political sciences at the National University of Cuyo.

He affiliated to the Radical Civic Union in 1983, and was elected as provincial senator for the 2002–2003 period.

He was elected national deputy in 2005, and resigned in 2007 to run for mayor of Godoy Cruz.

[2] In 2017, he was awarded Michel Temer with the Order of Rio Branco in recognition of the promotion of bilateral ties between the two regions.

[3] In 2018 Sebastián Piñera he was awarded the Order of Bernardo O'Higgins in the degree of Grand Officer in recognition of the collaboration in the integration of Argentina and Chile.