Here is the article.
It couldn't possibly have anything to do with the fact that Democrats support abortion, oppose religious exemptions on abortion or contraception, have called for crypto-religious tests to exclude faithful Catholics from the Supreme Court, held a convention where delegates booed a resolution in favor of a belief in God, pass resolutions describing Catholic doctrines as a threat to American values, requires that Catholics apostatize in order to become national figures, etc., etc.
Way down at the bottom of the story, there is this:
I thought that the "white vote" didn't matter.
I guess it matters when it matters.