PT Investigador en opinión pública, encuadramiento discursivo en los medios y ciencias sociales computacionales. Director Ejecutivo de la encuestadora IPSE.

Political scientist and economist. PhD from the University of Toronto. Senior Editor at Global Brief Magazine. Social Research Design Specialist at RIWI Corp. (Real-Time Interactive World-Wide Intelligence).

Director of CIEPS, International Center for Political and Social Studies AIP-Panama. Professor Emeritus at the University of Salamanca and UPB (Medellín). Latest books (2020): "El oficio de político" (2nd. ed., Tecnos (Madrid) and in co-edition with Porfirio Cardona-Restrepo "Dilemas de la representación democrática" (Tirant lo Blanch, Colombia).

Professor and researcher at the Institute of Social and Political Studies of the State Universityt of Rio de Janeiro (IESP/UERJ). Coordinator of the South American Political Observatory (OPSA). PhD in Political Science from Vanderbilt University.

Historian and professor at Chapman University (California). PHd from Harvard University. His writings on Latin American politics have appeared in The New York Times and The Washington Post, among other international media.