Influential member of the Justicialist Party who started his second tenure as an Argentine Senator in 2007. He represents the Salta Province which is located in the northwest of Argentina.
He earned his degree in law and political science from the University of Buenos Aires.
He was the Governor of Salta for 12 years from 1995 to 2007.
He and his wife Betina Marcuzzi have four children.
He took office as an Argentine Senator the same year Christina Dekirchner became the country's president.