Most of the commentary I'm reading from Catholic critiques of the Republicans is avoiding the manifest hypocrisy of the "life of the mother" and "cases of rape" excuses for abortion advocated by many Catholic Republicans and the Romney campaign.
Those excuses are contrary to Catholic teaching, yet there they are, so-called Catholics, so-called conservatives, hounding out of the Republican Party a man whose point was that pregnancies resulting from rape are rare, which they manifestly are, and that allowing them to come to full term and enjoy life isn't an "option" in some policy world. It's a moral imperative. In this Rep. Todd Akin, a conservative Presbyterian from Missouri, is a better Catholic than the Catholics.
Instead, the critiques are focusing on the libertarianism of Rep. Paul Ryan.
This makes excellent sense, after some reflection, for the simple reason that Catholicism sees in libertarianism a rival ideology, not unlike what Bolshevism saw in National Socialism. The point says more about Catholicism than it does about libertarianism. Catholicism fell victim to the ideological habit of mind long enough ago that Spengler in the 1930s could say:
"[A]ll Communist systems in the West are in fact derived from Christian theological thought . . . Christian theology is the grandmother of Bolshevism."
This observation makes the history of political economy necessarily a topic under the study of the history of religion. The concept of the church, which was totally foreign to Jesus, took the place of the failed imminent coming of the kingdom of God in his teaching, and immanentizes the eschaton he expected before the disciples had finished preaching in Israel. That false kingdom is now administered by popes, cardinals, bishops and priests. As such the church has been responsible for spinning off rival, "heretical", ideologies ever since. And if not the ideologies themselves, at a minimum the ideological habit of mind.
The conservative response to this is most certainly not to keep thinking ideologically. A dead Catholic named Russell Kirk also tried hard to tell us these things before he died.
Like Spengler's, his remains a voice crying in an impoverished wilderness of idealisms.