Looks like another stereotypical reaction on your part. According to this survey and other sites on the internet, swingers are for the most part middle class conservatives.


"The results of a national on-line survey of 1092 swingers are discussed. Questions from the General Social Survey are used to compare political, social, and sexual attitudes of swingers with the general population in the U.S. Measures of marital and general life satisfaction from the G.S.S. are also used to compare the groups. A preliminary attempt is also made to determine the level of childhood abuse and family dysfunction in the backgrounds of swingers. It is concluded that swingers surveyed are the white, middle-class, middle-aged, church-going segment of the population reported in earlier studies, but when it comes to attitudes about sex and marriage they are less racist, less sexist, and less heterosexist than the general population. Swinging appears to make the vast majority of swingers' marriages happier, and swingers rate the happiness of their marriages and life satisfaction generally as higher than the non-swinging population. Implications of the study and its limitations are also included".......

http://tinyurl.com/na3hx