They surveyed 2,388 tenured and tenure-track faculty, and ~644 responded. I don't think that it's too controversial to say that a group of highly educated people who are willing to self-identify their political leaning would be overwhelmingly liberal.
"Fewer than 10 percent of faculty at the University of Wisconsin-Madison identify as conservative, while 70 percent identify as liberal, according to a new poll from the school’s Tommy G. Thompson Center"
https://www.wpr.org/news/survey-fewer-than-10-percent-of-uw-madison-faculty-are-conservative
#Politics #WI