You seem to be unaware:
A. The Roman Catholic church's members outnumbered members of any other Christian church BEFORE the 1960s (think back to Irish and Italian immigration of the 1800s, not to mention the people who founded Maryland in the 1600s)
B. Pat Buchanan, Alan Keyes, Gene Taylor, and many of the most vocal "Christian Right" are NOT Protestant.
These days or back in 1965?