But McCain apparently doesn't fully understand that. He said, "I think it's a fundamental tenet of our party to be pro-life, but that does not mean we exclude people from our party that are pro-choice."

No pun intended, but McCain is presenting a false choice here. Excluding pro-abortionists from vice presidential consideration is not the same as excluding pro-choice people from the party. We're not talking rank and file party membership, but the selection of the candidate for the second-highest office in the land, whose importance is that much greater considering McCain's age.

We don't need exit polling data -- only the powers of observation, experience and common sense -- to know that many pro-lifers are either single-issue voters or consider abortion to be by far the most important issue.

You can be sure that they won't vote for McCain if he picks a pro-abortionist running mate. They will not have that blood on their hands; and you can bank on that.

Postmodernist conventional wisdom notwithstanding, it is not an extremist position to be uncompromisingly opposed to killing babies in the womb. Being a matter of good versus evil, it is a morally imperative position.

But if principle alone doesn't float the McCain boat on this issue, which I don't want to believe, the McCain camp also ought to consider other political ramifications of selecting a pro-abortionist.

On no issue besides national security is Barack Obama more vulnerable than abortion. He not only has been without peer in his cultlike deification of abortion -- to the point of legislatively enabling infanticide -- but also is flagrantly and demonstrably lying about his record on these issues. And Obama doesn't even have the maturity of conviction or integrity to express an unequivocal position on when life begins, that question being above his "paygrade."

McCain has a golden opportunity to expose both Obama's dark-heartedness and his lack of integrity by zeroing in on his abortion and infanticide record. But if McCain picks a pro-abortionist, he will forfeit his moral authority and political advantage on the issue and might very well be conceding the election to Obama.