No, Catholics used to vote solidly Democrat, back in the days when most of them were ethnics: Irish, Italians, Poles, and other groups who were widely discriminated against by the WASP establishment. Most Catholics then were workers and union people, and they got support from the Democrat party.
That started to change in the late 60s and 70s, when the Democrats became the party of the hippies and the privileged, and when they began to stand for abortion. Also, when discrimination eased off, and the WASP establishment pretty much collapsed.
Since that time, Catholics moved steadily over to the REpublican side, especially after the Republicans adopted a pro-life plank. In recent years it has been roughly 50-50, and analysis suggests that church-attending Catholics are much likelier to vote Republican, whereas dissidents still vote Democrat.
But the Country Clubber faction in the party turns Catholics off—and rightly so.
Sarah is an Evangelical, but real Catholics would be happy to support her. Having the Downs syndrome baby would be a powerful argument for them. She is clearly someone with strong, Christian moral values.
What I am coming up with is, they used to be really democrat before 1960 and in the 13 elections since 1960 they still voted against the republican nine times.
If you go back to 1936 it makes a total of 19 elections and them voting against the republicans 14 times.