Anyway, the horns of the dilemma is this: If (and that's a mighty big if) you can put aside the issue of abortion, the race tightens significantly in terms of adherence to the issues.
I can see no way around the Big If so it seems plainly evident that if one is to use Church teachings to tally a score and vote accordingly that one is a showstopper.
I don't really think Catholic values align very closely with either party. If you agree with the church on everything you end up being viewed as a grand contradiction in the manichean world of Left v. Right, Dem vs. GOP, etc.
My point, and I do have one, is that there is room for reasonable people to disagree without all the cynicism and bile and vitriol. Quite frankly, the MSM has taken up the mantle of the 527's on the left and bloggers have stepped in that role on the right.
h/t: Deacon Greg