With all due respect when you look at his actual voting record and not his phony lifetime ACU rating, he isn't. He votes right along with his "buddies" Kennedy and Kerry a majority of the time on the important Republican / Conservative Bills.
One year, not long ago, his yearly rating was a pathetic 67. That doesn't even classify as RINO.
An irate female Republican caller from Arizona to a radio show said that McCain's office responded to her and her group that "he does what he thinks is right". Her response was that his job is to do what the people of Arizona think is right not enforce his personal opinion.
I believe she has started a movement called mothersagainstmccain.com maybe .org or something similar.