Many in religious life can properly be equated with political appointees. Many others are no more than hirelings controlled in their teachings by their so called flocks. There are, of course, many who are people with true sincerity of faith. This would include people of all religions even though there exists among them errors on particular points. The fact that some religions, and even many people in most religions, favor abortion or are pro-choice is irrelevant.
Opinion polls are irrelevant.
The cold hard fact is that there will be large numbers who will come to a strength of belief that there is grave evil in society in regard to murder by abortion. They will become energized and start taking aggressive action against this evil. There will be no human force able to stop this movement once it has begun in earnest. The lives of all who speak in favor of abortion will be at grave risk. Perhaps, even probably, the lives of those politicians who fail to strongly oppose abortion will be at risk.