Nate Silver confirms that right of center politicians are almost totally absent these days as graduation speakers in the Ivory Tower. Lots of lip service is given to tolerance and a preference for diversity. That's the PC thing to do, particularly among those who like to think they are enlightened. The reality is very different. Click on the poll on that which Nate links in his article.
Given than faculty and students are overwhelmingly left-wing or non-political, why bringing someone clearly out of tune with them?
Yeah, SCREW THE MINORITY!