They cant challenge the critics on the substance of the criticisms. This is why no McCain backers even show up in threads like this one anymore. They realize that they will be put on the spot and will have nothing substantive with which to defend McCain.
They show up, but there are NOT many...and they just get the crap beat out of them, and digress to insults out of frustration. But they don't have a lot of fight left in them, and they give NO good reasons to support the turd. They can
see what's coming...especially since we keep telling them.