Affirmative action is OK, though

...studies that show the number of Democratic professors is generally much larger than the number of Republicans. A survey in 2003 by researchers at Santa Clara University found the ratio of Democrats to Republicans on college faculties ranged from 3 to 1 in economics to 30 to 1 in anthropology.

...the professors association...argues that conservatives are overstating the problem and, by seeking government action, are forcing their ideology into the classroom.

"Mechanisms exist to address these glitches and to fix them," said Joan Wallach Scott, a professor at the Institute for Advanced Study in Princeton, N.J., and former chairwoman of the professors association committee on academic freedom, in testimony at the Pennsylvania Legislature's first hearing. "There is no need for interference from outside legislative or judicial agencies."

Some surveys here. Me, I'm opposed to quotas of any kind, even if there are certain imbalances.