After 150 years of knowing the Catholic vote, and it's devotion to the democrat party, we know that there is a "Catholic vote", it isn't wild and unpredictable, it is predictable and routine, just as the Protestant vote is, in the other direction.
The Catholic voters all belong to a single denomination, and their vote is predictable, because it is "the catholic vote".
You may have missed the point. The leadership of this church made it pretty clear they did not support obama after the heavy handed dealings they have had with him and his admn., but a majority of Catholics still voted for obama. If there really was a "Catholic vote" that vote would have shifted.
The vote that is being classified as "the Catholic vote" is really a large number of different groups and is not influenced in how they vote by their church leadership.
just as the Protestant vote is, in the other direction.
The Protestant vote is increasingly liberal. There are some conservative Reformed churches, but the bulk of conservative churches are the Evangelical churches.