Barna Research Group reports that there has been a seismic shift of 22 points among likely Catholic voters to Bush in the last four months. Also note that Bush has lost votes among Protestants. (Also see this story on the survey).
"One of the big stories of the campaign is the seismic shift in preference among Catholic voters. Almost one out of every four likely voters (23%) is Catholic. In May, John Kerry held a small lead over President Bush, 48% to 43%. In the ensuing four months, however, a myriad of events have stimulated a reversal among Catholics. Currently, President Bush holds a commanding 53% to 36% lead over the Massachusetts Senator among Catholics who are likely to vote. That represents a 22-point shift in preference in just four months." But also note this:
"Equally surprising, among Protestants who are likely to vote in November, President Bush has seen his 24-point lead over the challenger cut in half at the same time that his fortunes have reversed among Catholics. Since May, Mr. Kerry has picked up a small degree of support among Protestants (from 35% up to 38%) while President Bush has lost significant ground among Protestants (dropping from 59% to 50%). In total, that’s a 12-point drop in support for the President."