Unlike most of his supporters, Trump is highly conflicted on the issue of abortion. On the one hand, his sexual history speaks for itself, and he clearly thinks that prohibiting abortion will cost him votes among suburban women. On the other hand, his Supreme Court justices made Dobbs possible. No one is more responsible for the current state of affairs than he is.
Trump’s desire to stay in lockstep with his base will prevail over any other considerations, his vanity excepted. If he wins, and the GOP has a majority in both houses of Congress, it is highly likely that we will see a national abortion bill speeding through the system, and that he will sign it. Would he make any efforts to tone it down? Quite possibly, but they will be quiet and behind the scenes.