If you go by the polls a majority of Roman Catholics voted for the 0 so no surprise.
You can find the aggregated and annotated 2008 exit polls, covering a wide spectrum of religious affiliation, on my profile page.
Not exactly. A study cited by Archbishop Charles Chaput of Denver in his recent address to the University of Toronto finds that the overwhelming majority of catholics who regularly attend mass and practice their faith voted for McCain or did not vote at all.