Answer is here

Dean has run a fantastic campaign by tapping into a very real anger that exists among many Democrats, including this one. I believe Dean when he says he wants to be the candidate for everybody, even guys with Confederate flags on the backs of their pickup trucks. Unfortunately, the reality is that Dean can only be the candidate for people with Darwin fishes on the backs of their Volvos and rainbow decals on the backs of their Jettas. He’s not a bad guy, but if he’s our standard bearer, Democrats are in deep poop.

[emphasis added
Big Hat Tip To The Note. I love that last sentence.