I don’t think that you realize the purpose of the 1965 Immigration Act, it was to erase America and American culture, and to replace it with exotic third world foreigners who didn’t know, and do not care how we had built the greatest nation in the world.
Protestants don’t vote democrat, they only voted democrat in 1932, 1936, and 1964, the left had to replace the American Protestant voters, or they would never be able to survive, so they changed out immigration laws in 1965.
Immigration means the democrats take it all and the past disappears.
Protestants don’t vote democrat, they only voted democrat in 1932, 1936, and 1964
So they voted for the New Deal and Kennedy's successor. As to 1960, the election was close and stolen anyway.
But again, the real issue is not statistics but leadership. Both Protestant and the Catholics lose votes to the left, and they both lose their flock to those without a pronounceable religion; that is a shame, and that is happening because we don't have solid Protestant leaders any more that we have solid Catholic leaders.