If you accept the results of unscientific and unreliable exit polls utilizing suspect, at best, methodology.
And which dismissive response i have seen from RCs on any stats that impugn the reputation of their church. However, while there must be allowed a small degree of error in any such surveys, when numerous polls consistently testify to Catholics overall leaning liberal, and RCs invoke them to raise an alarm, or when some favor their church, then it is those who dismiss such as unreliable whose credibility is to be questioned. http://www.peacebyjesus.com/RC-Stats_vs._Evang.html
I suspect the 54% quoted contains many with ideas that match the mindset of Sandy. As to her knowledge, I find that those who are EXs have a lack of understanding of the WHAT and WHY of Church teaching.