I am not sure I see a "uniform political slant." People in the many fields that comprise liberal arts find many things to disagree with each other about, sometimes quite vehemently.
It would be surprising if educated people supported a party mostly hostile to the existence of their jobs. That still leaves a lot of room for differing political beliefs since there are not only two possible political positions.
Republicans have made hostility to universities, or at least the non-engineering parts of them, a plank for as long I can remember. Recently, Ron DeSantis led a high-profile effort to take over the New College as part of his audition for President. Like everyone else, professors are capable of understanding that they have interests aligned with different political positions.
