You would think, but do a search of "Robert Sarvis splitting votes" and you'll see a consensus that Cuccinelli is the one suffering from Sarvis' candidacy. The most optimistic article I found (for Ken) estimated that Sarvis is siphoning off 7% of votes from Cuccinelli compared to 4% for McAuliffe.
Well, that's sort of my point. We're not going to boot him from the ballot, so he's in the race. The way he does the most damage to the crook is if he seems palatable to the socially liberal, fiscally conservative crowd. Since Cuccinelli hasn't made a good case on the economic side, that group is most likely to drift toward McAuliffe (but still feel unease with the sleaze). So let Sarvis talk up gay marriage, drug legalization, and other issues the social leftists like. Heck, we should help him there, point out to that McAuliffe is talking out of both sides of his mouth. If half the gays in the commonwealth voted for Sarvis instead of McAuliffe, that would probably even out the currently disparate impact his campaign is having.