They were Democrats that switch to Republicans because they hate "gays" and "blacks".
What, all of them? But then I suppose that the proletariat is a strange and exotic (if rather distasteful!) sub-species of humanity as far as the enlightened denizens of this forum are concerned, so I suppose it's only natural for said enlightened denizens to consider the possibility of diverse opinions amongst such an essentially worthless section of the population as the proletariat (of which I must, alas, confess to being a member of by birth) to be next to negligible.
Remove the phrase "next to" and you have it.
You have to be careful, though. I also disagree with the generalization that the OP made, but you must remember that he's specifically asking about the blue-collar subset of the working class. We could have a different discussion of the white-collar subset of the working class. Generalizations about them would be equally offensive, but they'd be equally amusing I think. And in the US, at least, you would not necessarily be a permanent member of either of those classes by birth.
FWIW, I voted Democrat here. I did it on instinct, of course, but then later did a little research into the 20 or so biggest donors of each party and found that my instinct was correct.