https://twitter.com/ryanburge/status/1212039207058845697Interesting piece of information on how party ID has shifted 2010-2018 according to CCES. Largely a continuation of previous trends with various religious groups becoming more Republican which began to occur post 1980.
Long term we are heading for a situation whereby among whites, basically all religious whites will be in the GOP and the only whites left in the democratic party will be non-religious whites. Among Hispanics the split will probably be more even though religious Hispanics will likely disproportionately be Republican. Blacks religious and non-religious will likely remain democratic.
What this will mean though is the religiosity gap between the two parties will be huge as basically the only religious voters left in the democratic party will be religious blacks + a few religious Hispanics whereas the GOP will have religious Hispanics and also basically all religious whites.
It will be interesting to see what the politics of the 2 parties looks like when there is a much more complete polarisation along religious lines with the exception of black voters.