Let me be blunt: If Republicans nominate Rick Santorum to run for president, they will lose.

The prospect of four more years of President Barack Obama holds some appeal for many Americans but probably not for most Republicans. It may give doubters among them some comfort, however, to know that Obama and Santorum share the same prayer: that Santorum be the Republican nominee.

It gives me no pleasure to rap Santorum, a man I know and respect even if I disagree with him on some issues. Not that he minds. He’s a scrapper who loves a fight — and he forgives. Bottom line: Santorum is a good man. He’s just a good man in the wrong century.

This doesn’t necessarily mean he’s wrong about everything, but he’s so far out of step with the majority of Americans that he can’t hope to win the votes of moderates and independents so crucial to victory in November. The Republican Party’s insistence on conservative purity, meanwhile, will result in the cold comfort of defeat with honor and, in the longer term, potential extinction.

Increasingly, the party is growing grayer and whiter. Nine out of 10 Republicans are non-Hispanic white, and more than half are highly religious, according to Gallup. This isn’t news, but when this demographic is suddenly associated with renewed debate about whether women should have access to contraception — never mind abortion — suddenly they begin to look like the Republican Brotherhood.

Add to that perception the abhorrent, pre-abortion ultrasound legislation proposed in Virginia, and you can kiss the pope’s ring and voters’ retreating backsides.

The proposed law, temporarily tabled, called for women seeking an abortion to be forced to submit to a vaginal ultrasound. Aldous Huxley’s “The Devils of Loudon” comes to mind, but he was writing about exorcisms in a convent of 17th-century France. When did Republicans, who supposedly believe in less government intervention, begin thinking that invading a person’s body against her will was remotely acceptable?

Saner minds have prevailed, at least for now, but the fact that the bill was ever conceived and taken seriously by at least some legislators gives freedom-loving voters every reason to run the other way.

Informed consent is, in my view, a reasonable goal. Surely removal of a human fetus deserves the same level of awareness we would insist upon in removing, say, a gall bladder. If some women change their minds after viewing the contents of their womb, then they obviously needed more information than they had going in. Still, any procedure should be voluntary, and inserting a probe into a woman against her will is rape by any other name.

Obviously, this is no place for the state.

The Virginia bill and the broader, bogus message often repeated on left-leaning talk shows that Republicans are campaigning against birth control have created a perfect storm for defeat. The math is clear: Sixty-seven percent of women are either Democrats (41 percent) or independents (26 percent); more women than men vote; 55 percent of women ages 18-22 voted in the 2008 presidential election.

Republicans are caught in a nearly impossible situation, none more than the more temperate-minded Mitt Romney. It is important to remember, however, why contraception came up in the first place. Republicans were forced to man their battlements by the Obama administration’s new health-care rule requiring that Catholic organizations pay for contraception in violation of conscience. From there, things spiraled out of the realm of religious liberty, where this debate belongs, and into the fray of moral differences.

Santorum’s original surge was based not on social issues but on his authenticity and his ability to identify with middle-class struggles. He was the un-Romney. But now this appealing profile has been occluded by social positions that make him an outlier to mainstream Americans.

Republicans may sleep better if they nominate The Most Conservative Person In The World, but they won’t be seeing the executive branch anytime soon. It’s too bad this election season got lost in the weeds of religious conviction. It wouldn’t have happened if the Obama administration had simply taken one of several other routes available for providing birth control to women who want it. Instead, Obama aimed right at the heart of the Republican Party and, one can only assume, got exactly what he wanted: a culture war in which Rick Santorum would be the natural point man and, in the broader public’s perception, the voice of the GOP.

kathleenparker@washpost.com