The shipment arrived last week and finally Politix can be found in stores!
The easiest way to buy the game is from Lautapelit.fi online store (yes, they ship outside Finland as well ). Here's the link: http://www.lautapelit.fi/product.asp?lang=3&sua=1&tk=6133436... The cards have the text in Finnish and in English as well, so the game is fully playable without knowing any Finnish. The game includes also English (and Swedish) rule book.
For those going to Essen this year: most likely the game can be found there as well. I'll hopefully confirm this soon.