I would think your key word is single. Single doesn't imply dating to me.
Well, the US Census department has a pretty clear definition of single, so there's really no debate there. Still, you may be on to something. I, and maybe Gramps, are reading this more as "would you do her if..." rather than "would you date her if..."
Granted, they're two different questions. Dating is a tricky issue. Even in the good old days. I'm 44 and have been married for 8 years, and was with the same woman for several years before that. But till I was about 33 I was single (in the U.S. Census bureau sense). But I went through a series of monogamous relationships interrupted by periods of (sometimes enjoyable, sometimes lonely) freedom. During those interludes, I certainly wouldn't worry about someone's political ideologies. During the monogamy, I'll admit to sometimes hearing things that made me cringe. Still do, in fact. I'm married, after all, and if you can't allow for any differences of opinion, then you should do everyone a favor and let yourself remain a bachelor. Nothing wrong with that.
But I'm struggling with the idea of dumping someone who I otherwise like over the idea of political differences. Then again, I'm something of a centrist. I guess if I were a communist, then a fascist would be a bit too weird, and vice-versa. Maybe that's the key here. It might not be so much generational as it is a matter of how seriously you take yourself and your politics. If you're the sort of guy who's willing to chain himself to a tanker, risking death or loss of limbs, in order to save a particular species of penguin, then I can stipulate to a certain degree of respect that you might be unwilling to commit to a serious relationship with a woman whose entire investment portfolio depends upon petroleum extraction and delivery.
But, really, at least admit that you'd take your drilling rig aboard her ship for an express ride.