have certain catholics been voting republican for longer than we think?

[Mechaman]

I believe that the Republican strength in the 1920's is pretty self-explanatory if one knows the history of Woodrow Wilson's second term and of James Cox's self destructive and blatantly idiotic presidential campaign.

Also, some insight into Calvin Coolidge:

http://www.calvin-coolidge.org/html/coolidge_and_the_northampton_i.html
http://www.city-journal.org/2012/bc0316cj.html

Which explains why a certain group didn't return to the home base in 1924.

1928 was a MASSIVE reversal of the previous two elections (at least in regards to the Catholic vote).

[Mechaman]

White Catholics have trended R lately, but overall Poles and Irish are still Lean D due to being more working-class. The most Republican whites are still English and Germans.

Irish Catholics are still considered "working class"?

I mean yeah, obviously in places like Southie it might be true, but I was under the impression they've trended more "lace curtain" over the past half century.