There is a universe of roughly 15 previous YES votes from which Democrats are worried about losing a handful.
Right now, it looks like they can afford to lose NO MORE than 7 of these YES votes most of which will come from the Democratic anti-abortion rights crowd.
But what about previous YES votes that Democrats need to work to keep YES? The White House and Democratic leadership on Capitol Hill are prepared to lose some of these. The first six names below are of most concern to the Democratic leadership and most likely to bolt.