...and, if he is elected president, he will appoint the final judge who takes it from you forever.
I can't hammer it enough that this is the single starkest consequence of a Republican presidential victory in 2008, and if John McCain wins, it will happen. The Supreme Court currently has 4 diehard, social conservatives who don't believe in the right to privacy. There are 2 ancient justices who are likely to retire within the next couple of years, and they're both liberal. John McCain has already said on multiple occasions that he will appoint "strict constructionist" judges, which is dog whistle for anti-right to privacy. John McCain has also already said that he thinks Roe v. Wade, which relies entirely on the right to privacy, should be overturned. Why would he do anything other than to appoint another socially conservative judge? And why would anti-Roe groups do anything other than to bring an lawsuit before the Court when that happens? And why on earth would 5 socially conservative, "strict constructionist" judges in the most politicized Supreme Court in decades do anything other than to hand their side their greatest victory in who knows how long?
If Justice Scalia were presiding in a case over the constitutionality of the right to privacy or abortion, would you bet your rights on him doing a 180 and voting with Ginsburg and Souter? What about Alito? Thomas? Roberts?