As long as people are aware that the only way to keep McCain out of the presidency is to vote for Obama. Any scheme about exchanging votes depends on a degree of trust which only the naive would expect.

McCain, as I've noted, believes and has stated that the US was founded as a Christian nation. And that when immigrants come here, they know this.

And he will appoint Supreme Court justices who reflect his belief--which is also shared by the religious Right--whose votes he depends on heavily.

Only the clueless would not realize this.