Whenever I run across a Megan McArdle article, I make a point to read it. Here's another good read:
http://www.bloombergview.com/articles/2016-01-07/academics-are-so-lefty-they-don-t-even-see-it
http://www.bloombergview.com/articles/2016-01-07/academics-are-so-lefty-they-don-t-even-see-it
The real-life example she describes in the article is chilling.In fact, few other professional spheres are as strongly skewed to the right as academia is to the left; when I looked into this a few years ago, the only professional group I could find with a similar rightward skew was Southern Baptist ministers, a comparison that neither group probably finds very flattering. Military officers are weakly conservative (two-thirds to one-third), but the enlisted are less so, and whether your business skews Democratic or Republican varies by industry and job description. Professors really do stand out as extremely politically concentrated on the left in a way that few other groups are, especially in areas like social psychology.