I went to a California state public university and a private university also in California, and both were politically neutral.
While both schools had professors on both sides of the political spectrum, liberals by far out-numbered conservatives.
During the last presidential election, one of the obscure political magazines did a survey on how professors on college campuses classified themselves, and nearly 100% identified with the left / liberal side of politics.
Needless to say, I came out as a passionate-moderate-conservative, with a pronounced libertarian twist.