I don’t go around calling the GOP a party of anti-abortionists, even though there is a loud and substantial minority which favor that. (And Republicans actually do enact relatively minor abortion restrictions where they can).
Instead, I go around saying the GOP *hasn’t* banned abortion despite their rhetoric, and never will. Why won’t they? Simple answer: Roe v. Wade prohibits them as a matter of law, and public opinion on this issue prohibits them in practical terms.
Hardcore social-conservative GOP candidates like Rick Santorum and Mike Huckabee (who in theory might have made abortion their #1 priority) have tried their best in the GOP primaries — and even got pretty far — but at the end of the day, the GOP chose a candidate with different priorities.
We just had a primary season which determined as of yesterday that the Democratic Party does not favor a candidate who calls himself a socialist.
Applying the same analysis as I do to the GOP and abortion, I conclude the Democratic Party is not a pro-socialist party.