Just watched most of the voting. Apart from the ex-Russian satellites all trying to help each other out and avoid being invaded by Russia, the voting seemed mostly ok. Of course the Scandinavians voted for each other and so did the Mediterranean countries, but on the whole not bad.
But is that necessarily political? Could it not just be that different parts of Europe have different musical tastes? I didn't want Eurovision of course, but, say, Russian music is very different to Spanish music which is very different to British... so it would be understandable if there are clusters of different musical tastes within Europe - i.e. Russians would perhaps be more likely to vote for other music that sounds like Russian music (because that's what they know and like), which would most likely come from related countries.
You are of course right about the different tastes, but most of the Scandanavian countries despite being more cosmopolitan these days still seem to stick together somewhat. The trick of course is to come up with a song that has broad appeal as well as artists that have talent, which Norway managed to do this year. Jade had the talent for the UK but I still felt the song didn't have enough universal appeal and was still a bit "blowing one's trumpet" which considering the UK's standing was a bit of a risk. We haven't had talent for years, or songs, it's a shame this was let down a bit by the song. (However compared to last year's rubbish, it was brilliant.)