It's about abortion, all right
Josh at The Lion and The Donkey reminds us that Roe v. Wade isn't the only Supreme Court decision that might be in jeopardy because of the O'Connor retirement. In the Stenberg v. Carhart case, only five justices - including O'Connor - held that a Nebraska law prohibiting D&X abortions was unconstitutional because it failed to exempt situations where a woman's health was at stake. As Josh says, it's hard to imagine a Bush nominee who wouldn't vote with the conservative bloc on a similar case, so it's probably open season on late-term abortion, even if Roe were to survive.
Nonetheless, there will still be those who insist that "it's not about abortion."