Okay, let me rephrase. Any Judio-Christian religion is NOT the deciding issue.
How you stand on Illegal Immigration is a deciding issue. McCain is pro-Illegal Immigrants as his amnesty bills display.
How you stand on keeping the radio waves free is going to be an issue. McCain is pro gagging political commentators through the (un) fairness dotrine.
Being a Mormon means squat to just about everyone. Mormons still abide by a certain set of morality and ethics codes, which is all the “religious reich” wants. Mormon, Catholic, Protestant, Christian, Jew, Luthren, whatever, as long as you have faith that there’s someone more powerful then you are and you believe that you must abide by certain ethics and morals, you will satisfy the religious needs of the Republican party.
Sure, there’s going to be a few whackos that won’t accept it. One is the guy who killed FDR because he was Catholic. But that didn’t stop FDR from getting elected!
Anyone who thinks McCain’s going to win this decisively is living in a dream world. Actually, I bet that McCain will not only lose, but lose BIG just like every other attempt he has made for the Republican Nomination. (1996, 2000 and now 2008.)