The truth is because of the history OP points to Democrats have likely never had the votes for federal abortion legislation. Nor did they need it because it was

The truth is because of the history OP points to Democrats have likely never had the votes for federal abortion legislation. Nor did they need it because it was a constitutional right. The last true democratic trifecta was in the army Obama years where there were still plenty of “blue dog” and pro-life democrats. There were many more democrats like Biden who were personally pro life, due to his catholic background, but content with it as a constitutional right. The Hyde amendment which prohibits Medicare funds for abortions is ample evidence of this artifact of older political lines. This leaves the 2020-22 congress to shore up abortion rights. However those congresses had the narrowest of majorities and much larger fish to fry (pandemic recovery and inflation, etc etc). It’s only been a strong and unifying rallying by cry for the party since the post roe era and even that wasn’t obvious until after the 2022 mid terms.