Focus on 1968 to present, with some coverage back to 1912. Each edition includes data on Campaign Finance and Political Action Committees. Other chapters feature downloadable data on parties and election results, and public opinion and voting..
Individual entries on the Gallup website can be found by searching Google. These “Election Polls — Vote by Groups" links are referenced by CQ Researcher: library.cqpress.com/cqresearcher/cqresrre2015100200
1960–1964, Gallup.com, http://tinyurl.com/bvlp3ux
1968–1972, Gallup.com, http://tinyurl.com/oqs7vqr
1976–1980, Gallup.com, http://tinyurl.com/o7rff7a
1984–1988, Gallup.com, http://tinyurl.com/pxmg3dq
1992–1996, Gallup.com, http://tinyurl.com/ootflss
2000–2004, Gallup.com, http://tinyurl.com/oh9c2y8