The gender near-parity in pro-life sentiment is easy to explain: Women are more religious than men.
64 per cent of American women say they pray daily, compared with 43 per cent of American men. In Canada, those figures are 30 per cent and 28 per cent (which helps explain why abortion is much less of an issue here).
https://www.pewforum.org/2016/03/22/...r-gap-is-wide/
If this seems surprising, it's because the spokespeople who purport to speak on behalf of women are atypically irreligious, while the most prominent proponents of religious faith are atypically male.