Let us first say that John McCain is a good old man. Sadly he suffered many torturous years in Vietnam as a P.O.W. and has a long history in the U.S. Senate, but that doesn't deem him fit to be president.
America just cannot take 4 more years of Bush's reign of terror and if you believe McCain some of the time, then you will believe he supports the Republican president 90% of the time. Yikes!