It's very unlikely to be Bristols. First of all, they would have had to hid that, and there's no indication of anything amiss. Secondly, statistically, Downs Syndrome children are born to older mothers.

And anyway, none of this really has anything to do with why Sarah Palin and John McCain are WRONG for this country. There's no shortage of reasons that are right out in the open to reject the old fart and his cynical 'gift' to the regressive right wingers (Palin).