Too Much Blue in Academia?

NewsMax reports:

One national survey of more than 1,000 profs shows that Democrats outnumber Republicans by at least 7 to 1 in the social 'sciences' and humanities.

I wonder why the author(s) of this study excluded professional schools from their study. Do they assume that colleges of business house hoards of Republicans? My experience as an academic suggests that faculty at colleges of business mirror this blue pattern. As one that subscribes to a rosier view of the world, the dominance of blue perspectives makes my day to day professional life rather interesting.