We see too much about liberal bias against conservatives and conservative bias against liberals. But do we even know what a conservative or liberal is?
Are those who think billionaires should be free to run their companies without any government interference liberals or conservatives? They are certainly "liberal" in their interpretation of the Constitution. The true conservatives are those who believe the Constitution's power to the Congress to "regulate commerce among the states".
Are those who think the Constitution starts with "We the People" means persons as a collective liberal or conservative? It seems that so-called conservatives are rather liberal in interpreting the opening clause as "We the Corporations".
Nicholas Kristof wrote a column about liberals and conservatives in academia. For some of the letters in response see http://www.nytimes.com/2016/05/15/opinion/sunday/politics-and-academia.html.
If "conservatives" have a problem being accepted into academia it may be because they are not open to change. A true academic is a liberal-conservative: liberal in open to new views and conservative in evaluating evidence.