O'Connor was not the swing abortion vote

Matthew Yglesias has a Tapped post making a point I've been meaning to make: namely, five judges on the current court besides O'Connor support the core finding of Roe v. Wade, which means that O'Connor's retirement does not place basic abortion rights in direct jeopardy. Liberals are going to get this wrong by the thousands over the next month or two. Atrios and Josh Marshall already did so, though to their credit both posted corrections (Marshall's is in a separate post here).