Immediately after that, McCain had to have surgery for skin cancer and dropped out of the campaign.
Rewriting history doesn't work for some of us with clear heads and long memories.
However, I've always felt that they've personally disliked each other since the fun in SC in 2000!, and while I'm sure that it's scabbed over, it's probably never truly healed. McCain and Bush spent nine months in 2001 sniping @ each other like they were petulant two-year-olds, and if I remember correctly, Bush signed McCain-Feingold without a Rose Garden ceremony just to spite McCain. The nice people from Al Qaeda were the only thing that led to a detente... Even then, McCain has continued to be a thorn in the Bushies side.
The fact that McCain didn't vote for Bush strikes me as pretty plausible, but I highly doubt that he'd blab about it in front of media whore Arianna. But it really does show the ridiculousness of the left... Reminding people that Bush and McCain have lots of reasons to hate each other actually HELPS McCain considering how unpopular Bush is with the unwashed masses.