“Also, I would note that in the years shortly before Roe, heavily Catholic New York's legislature voted to legalize abortion (1970)”
And the same Catholic-dominated legislature voted to undo its liberal abortion laws two years later, but were overridden by Protestant Gov. Nelson Rockefeller. Wiki has him as a Baptist.
Given that America is a predominantly Protestant nation, how did abortion end up outlawed in all fifty states in the first place? For much of American history there were negative attitudes toward Catholicism in many sections of the country. That was true as late as 1960 when there was fear among Democrats that JFK's Catholicism would hurt his chances in the presidential race. If opposition to abortion was merely a Catholic thing which Baptists, Lutherans, and others didn't share, then how did abortion end up outlawed in Alabama, Kansas, Idaho, and other areas where Catholics are a distinct minority?
Why, when the moral relativism of the 1960s spawned a pro-abortion movement, was it not stronger in the less Catholic parts of the country? It would seem it would have had a head start there, since there was no religious basis for opposition to abortion in the first place. But there doesn't seem to be any evidence that that's the case. New York legalized abortion, and it's heavily Catholic. True, they tried to unlegalize it in 1972. But the point is that a bill to legalize abortion would have been crushed by a landslide in the Georgia legislature in 1970. Yet Georgia has few Catholics. So where did the strong opposition to abortion there come from if Protestants didn't care about the issue?
From what I can see, both Catholics and Protestant Evangelicals opposed abortion all along. It was secularists and CINOs (Christians in Name Only) from both Catholic and Protestant backgrounds who pushed legal abortion. I guess we could add in liberal Jews, but most of them are secularists, and aren't religious like pro-life Jewish leader Yehuda Levin.