The president of the Centro de Investigaciones Sociológicas (CIS), José Félix Tezanos, has defended the credibility of the last survey presented by the agency, emphasizing that it has never "manipulated" a data from the polls, and has criticized some private polling companies, which are not "very rigorous" and "have become an instrument of social and political pressure".
The president of the Centro de Investigaciones Sociológicas (CIS), José Félix Tezanos, has defended the credibility of the last survey presented by the agency, emphasizing that it has never "manipulated" a data from the polls, and has criticized some private polling companies, which are not "very rigorous" and "have become an instrument of social and political pressure".
The president of the Center for Sociological Research (CIS), José Félix Tezanos, has defended the credibility of the last survey presented by the organization, emphasizing that [...]