The Catholic vote is a democrat vote and always has been, they only went republican five times in our history and not by large margins, and only once against a democrat incumbent.
The democrats have only won the Protestant vote 3 times, 1932, 1936, and 1964.
And I’ll repeat again that “Catholic” is very often a meaningless label of habit.
These “Catholics” are as secular and non-practicing as many of the people who call them themselves Jews.