I grew up in this kind of environment, and I completely agree that this is how religious conservatives talk about this issue and what they'd say to defend their

I grew up in this kind of environment, and I completely agree that this is how religious conservatives talk about this issue and what they'd say to defend their choice, but it's mostly bullshit. If Candidate D was pro-life, they still wouldn't vote for them. They'd either call them a liar and say they secretly DO believe in abortion, or they'd attack them for their stance on guns, or immigration, or prayer in schools, or whatever. And they'd continue to cast doubt on the accusations, so that it becomes a question of "candidate A was accused of X, but it's probably a bullshit conspiracy by liberals" vs. "candidate B definitely thinks Y!" Like almost ALL voters, these folks don't really think for themselves that much. They're products of their tribe, the influencers in the media they watch and listen to, their preacher, their friends, etc. The argument you've laid out is the one they'd use because it's available and the strongest from their perspective, but they'd just swap it out for another slightly weaker one if needed. It's about the tribe, not the truth.