That he had the support of Catholics tells us more about the Catholics than about Obama. He did not have the support of those who hold on to Christ, alone.
None of the polls had a category called "Those who hold on to Christ, alone". However I'd wager that you'd find people who self-describe tha way, in every listed category. What does that prove altogether?
Something very much worse than what you think, DutchBoy88. It suggests that voters vote much more by race than by faith. Catholics make up less than 25% of the population, and vote overall almost identically to All Voters (a fact of which I am not proud). But with non-Catholic Christians outnumbering Catholics two to one, it would be rather stupid to blame Obama on Catholics.
And then theres this:
So quit this stupid religious numbers game and...
I mean, if thats what you want.