How do Italian-American converts to Protestantism vote?

[Хahar 🤔]

My manager at my last job is this sort of person. I don't think that he's especially religious, but he was raised Catholic but now attends a Protestant congregation (presumably mainline, but I didn't ask) with his wife and children. We never talked about politics, but he lives in Buckhead and he and his wife both have six-figure jobs, so it seems like a solid guess that he used to vote Republican but now votes Democratic. In this sense I think he'd be indistinguishable from other congregants at his church.