Relationship between Economic Status and Political Preference

The three hypotheses for this paper are: (1) Political preference and economic status are related. (2) The relationship between political preference and economic status will depend on some extent to education level. (3) The relationship between political preference and economic status will depend on some extent to geographic region. Instructions are attached, so is the organization for the paper, and the 3 journal articles for the literature review. I have attached the three articles that need to be summarized for the paper (explained in the instructions).