I'm not sure what any institution could do to encourage conservative (or any other type) of voices.

Yeah, my father and i were talking about this last weekend because it was Family Weekend and in her Presidential address, Carol Christ mentioned her commitment to diversity.

I think one big thing would be to hire more conservative faculty so that when profs mention politics in class it isn't all "So as the evil Bush Administration drags us closer to a fascist state...." (Or, obviously, the reverse if it's a heavily conservative campus.) Also, more guest speakers who have opinions at odds with the majority of the campus. And tied to that, having more forum discussions about issues with panelists of varying opinions.