NOTE: The Cumulative Data File was originally constructed with each "100s" series of variables corresponding to a general content group. To some degree, the original organization can still be detected ("VCF" prefixes omitted): 0-99 Administration/Processing 101-199 Demographics; 201-229 Group Thermometers 301-399 Partisanship (Traits/Affects added) 401-499 Candidate evaluation 501-599 Party Positions on Issues 601-699 Support of the Political System 701-799 Turnout, Vote, Participation and Media 801-899 Respondent Positions on Issues 900s Congressional-level additions However, as questions have been added and numbers have become less available in appropriate number series, overall organization has become less systematic. In particular, the addition of variables VCF9001-VCF9155 introduced a number series covering great variety of content. A general reorganization of the Cumulative Data File is planned in future, in conjunction with the addition of a number of new variables. Variables preceded by ** are represented in the tables of the Guide to Public Opinion and Electoral Behavior found at the NES Web site, http://www.umich.edu/~nes.