At this point, if they chose to prioritize the matter, Democrats control enough states that something like 283 electorates would go to the popular vote winner, thus surpassing the 270 needed to be President. However it's not certain if Democrats will actually prioritize this, there were several Democratic-controlled states which had the opportunity to pass this law who have declined to do so, and there would probably be a legal battle involving the Supreme Court if it ever actually became a thing.

Though interestingly, I suspect Trump wouldn't care one way or the other, since he now will also be at war with his own party and could give even less of a shit about their fortunes going forward.