Heaven forbid that McCain should have to earn conservative votes. Leftists always have a huge sense of entitlement and no sense of personal responsibility.
You obviously aren't familiar with the political landscape. In the primaries, candidates try to earn your vote. Eventually, a nominee is picked. In the general, unless you are a socialist, you vote GOP. It's really that simple. GWB didn't "earn" my vote. He got it by default, by being a better choice than the traitor socialist surrender party. McCain has also managed to be a better choice than the DEMs. It's a no brainer.