I realise more and more that I did not phrase my question/query very well. What I meant with a political discussion was that you have a general issue and you try to find either the truth or a consens if possible. So I don't want to discuss Democrats vs Republicans (I am German anyway) but talk about certain issues that you would not want to discuss, because they are "political". (e.g. same sex marriage, how to minimise poverty etc.)
If you want to discuss a topic without reference to partisan national politics, I'd recommend you do so and see what happens. I expect that for the most part, if the topic is one of genuine interest, you'll get a discussion about it.
That said, it's worth paying attention to what makes certain topics seem interesting in the first place.
I discuss same-sex marriage on this site not-infrequently, for example. That's because I happen to be in one, and we often discuss relationship dynamics. I don't generally get downvoted for it.
OTOH, if I were to start talk...
Hello fellow LWs,
As I have read repeatedly on LW (http://lesswrong.com/lw/gw/politics_is_the_mindkiller/) you don't like discussing politics because it produces biased thinking/arguing which I agree is true for the general populace. What I find curious is that you don't seem to even try it here where people would be very likely to keep their identities small (www.paulgraham.com/identity.html). It should be the perfect (or close enough) environment to talk politics because you can have reasonable discussions here.
I do understand that you don't like to bring politics into discussions about rationality, but I don't understand why there shouldn't be dedicated political threads here. (Maybe you could flag them?)
all the best
Viper