His paternal grandfather emigrated from Bessarabia. He was elected to the Argentine Senate in 2007, representing the City of Buenos Aires on the Civic Coalition ticket. He left the Civic Coalition on July 8, 2009 and formed his own par- liamentary group, the Federal Buenos Aires Project and was subsequently considered a circumstantial ally of the Cristina Fernandez de Kirchner government. Cabanchik is a professor of contemporary philosophy at the University of Buenos Aires and conducted research for Conicet, the National Scientific and Technical Research Council. His books include El revés de la filosofía (Buenos Aires, Biblos, 1993), Introducciones a la Filosofia (Barcelona, GEDISA, 2000) and El abandono del Mundo (Buenos Aires, 2006). Cabanchik was affiliated to the Radical Civic Union but was inactive for several years prior to actively supporting the Civic Coalition of Elisa Carrió. He was elected to the Senate on the list of the Civic Coalition in 2007. On July 8, 2009 he announced he was leaving the Civic Coalition and forming his own parliamentary group, the Federal Buenos Aires Project. He has since become a strong parliamentary ally of President Cristina Fernández de Kirchner. In 2013, at the end of his Senate term, Cabanchik decided to run for the Municipality of Buenos Aires assembly on the Alternativa Popular ticket, which supports the government candi- dates for the Senate, Daniel Filmus, and the chamber of deputies, Juan Cabandié.