In 2008 for instance the Catholic vote was 54% for the radically pro-abortion Obama and 45% republican.
In all of our history the Catholic vote has only gone republican 6 times, (5 by some data).
They are not a 50/50 vote, Protestants on the other hand, only voted democrat in 1932, 1936, and 1964.
You mean white Protestants, ansel12.