Well I don't understand why people are so upset that some conservatives don't care to vote for McCain. What is the big deal? You have moderates, Independents and liberals that will vote for him so you really don't need to worry.
And all the polls indicate McCain will win big Tuesday, get the nomination and go on to beat Hillary by 8 or Obama by 6. So if the conservatives want to skip this one, no big deal. Quit worrying yourselves.