Following Salon's story about Republican Sen. George Allen's alleged use of racial slurs, Larry Sabato, the ubiquitous political scientist, made a curious appearance on MSNBC's "Hardball with Chris Matthews." As described here, Sabato "claimed to know that Allen had used the racial epithet. 'I'm simply going to stay with what I know is the case, and the fact is, he did use the N-word, whether he's denying it or not,' said Sabato, who was Allen's classmate at the University of Virginia, where he now runs the Center for Politics. Sabato did not initially elaborate on the source of his knowledge. But when contacted by Salon Monday night, Sabato said the source was distinct from Taylor and Shelton, a North Carolina radiologist."