[KevinTheOmnivore]

Schools and departments within universities, including state universities, hire internally. If the chair of a political science department happens to favor quantitative research over historical/theory based research, they will push to hire around that premise. New faculty are hired by committees, including the chair, generally. They will hire according to need, because a department is far more concerned with appealing to a broad spectrum than appealing to simply "Liberals."

Now, if the argument is that liberals in general tend to be drawn to academia, then that's a totally different matter. One, might I add, not exclusive to Colorado State.