Where Kerry's Mary Cheney comments hurt him...
They hurt him amongst swing voters who combine these characteristics:
1. A lack of historical perspective - Since they haven't followed politics for more than 10-15 minutes of their life, they aren't sure whether the GOP or Dems are traditionally homophobic.
2. A generally tolerant attitude towards gays.
So Kerry's comments are seen by these uninformed and politically apathetic swing voters as homophobic (and across the line). And since they don't have any frame of reference as to which campaign is ACTUALLY intolerant, they assume that it's Kerry. This affects their vote (for the next 48 hours until they find another superficial issue to vote on). I'm mainly talking about "soccer mom" swing voters here. I doubt there are many male swing voters out there who are using gay rights as a barometer.
What are the implications of this? Kerry's continuing to lose women.
Additionally - someone please shut Teresa Heinz Kerry up. I'm serious. She obviously has no interest in her husband becoming president, and that's fine. But can we at least not unleash her on the press?
There are just too many impressionable swing voters out there who don't pay attention to politics and are looking for a completely meaningless issue to help them decide. Let's not let Teresa be their reason. For the record, I don't find anything she says objectionable. In fact, I rather like her. But that's not the point.