Maybe I'm not accounting for states saying 20 weeks instead of 15, but I guess I could be more specific.
I think the Democratic position to "codify Wade" as guaranteed access through 9 months is not nearly as mainstream as you think it is, even among democrats. I mean, most European countries are in the 12-20 week range, and I don't normally think of France as a radical Christian theocracy.
I think only the bluest of blue states will guarantee full 9 month access. I think the vast majority of states will pass limits based on weeks, because that's where most people are. Support for unrestricted abortion after 4-5 months is just not that strong.
I would say that the 25 red states will all pass limits at 15 or less weeks. Of the 25 blue states, my guess is that as many of 15 will have limits of 15-20 weeks.
I could be wrong that there will be more states with <15 week bans than will allow 9 month abortion, if 20 weeks ends up being more where it settles.
But my point is, if people care about guaranteeing abortion access in early trimesters, this would be a good deal (if it is really on the table). I would guarantee that the considerable majority of abortions remain legal, which is far from guaranteed without a national deal. It would satisfy neither the pro-choice or pro-life idealists, but it would satisfy 60%+ of the American people.