Bloc voting 

Countries with large populations of non-nationals may have their televote influenced considerably. This has been cited as the reason for apparent bloc voting in the Balkan countries of the former Yugoslavia.[91] 

This is full-blown crazy. What does "non-nationals" mean? These countries have similar cultures and speak the same languages. The stars in Croatia are popular in Serbia and vice versa. People are nationals of their countries in the largest proportion in each of those countries (there are some refugees in each of those countries, but that doesn't really explain why Croatia would always give the highest no. .of pts to Serbia, or Macedonia to Serbia, where there was no conflict to speak of). For example, I'm a Bosnian Serb and me voting for a Croatian or a Serbian song is not unusual. But I'm not a Bosnian non-national. I have the passport of BiH, and my family has never lived in Serbia in history. It's really about mutual intelligibility  which is why Scandinavian bloc votes for each other all the time. It's the language and sensibility.