Matthew Yglesias points to this Weekly Standard article suggesting that Harvard's undergraduate population is ready to hear the siren call of conservatism.
Thanks in part to this enhanced conservative presence, the terms of campus debate have shifted rightward. Harvard history professor Stephan Thernstrom estimates that even in the 1970s, only 10-15 percent of the student body was actively radical. The difference today, he says, is that a formidable conservative opposition exists to challenge student radicals.