Andrew Stuttaford speculates:
So far as abortion is concerned, we should also remember that so long as Roe v Wade remains in force, most pro-choice Republicans (or Republican-inclined) may well decide that this is an issue that they can safely overlook when deciding that the largely pro-life GOP is the party for them. It’s interesting to speculate what would happen to the GOP should Roe v Wade be overturned.
It reminds me of what would happen to a group like the Human Rights Campaign if full gay equallity were to be achieved. I guess I'm one of only a handful of people who would be thrilled to see both Roe overturned and marriage equallty exist in every state that wants it.