Have you ever wondered why you haven't been able to find conservative people with the same interests as you? It's because your interests frankly aren't conservative! I mean, for example one of your own stated requirements of the girlfriend is that she's sexually uninhibited. I don't think many conservative women are like that.
Have you ever considered voting Libertarian? They are generally fiscally conservative... but more socially liberal than typical conservative/Republican. In my own opinion, you'd have more luck with liberal non-Christians if you voted Libertarian than if you voted Republican. That being said, don't start voting Libertarian just so that you can get a liberal non-Christian girlfriend, you should actually believe in the Libertarian political platform to do that.
My whole point is that you seem to insist on using labels to describe yourself, and you rely on labels for weeding out potential girlfriends. One, you need to make sure the label you choose for yourself fits, otherwise it'll look like you are misleading potential dates, plus you'll turn off people you could in fact be entirely compatible with. Two, you're essentially making people put themselves in a box. What if they are liberal on some issues, but conservative on others... how should they assign themselves? Yeah, the liberals and conservatives closer to the ends of the political spectrum won't have much problem putting themselves in their little boxes, but there are a TON of moderates out there, like yourself, who cannot be put in a box so easily. Your chances of finding a compatible girlfriend will vastly improve if you cast a wider and less-discriminating net, and let loose the ones you don't like after some contemplation, than if you were to cast a very small net that has a lot of very specific requirements right off the bat. You may find, for example, you're willing to let go of the South Park requirement in a particular woman if she for example has something else to offer that you really like. Relationships are about compromise, not "my way or the highway".
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Won't you help a poor little puppy?