I have a very hard time believing they don't realize who they're voting for. This isn't a secret. They're quite explicit about it.
I had been willing to believe that they simply put other issues first, which was merely selfish and short-sighted -- the kind of thing a democracy can be moderately robust for. But the culture war is front page news every day in every medium, and I simply cannot believe any more that it's not a deliberate choice.
It's actually the opposite, they're trying to speak to the people who might vote Republican and who may not realise what they are voting for.