The whole thing was dicredited long ago, it's not a song contest at all, just a political popularity contest. Pointless in it's curent form. Major voting reform is needed if this is to be the song contest it once was.
I think the problem only arose with the invention of all the eastern block countries who all seem to vote for each other, this has been going on or several years now and is one of the main reasons Sir Terry packed it in, I also think that during his commentary, Graham Norton has an earpiece in that is direct communication to Sir Terry who provides the input Norton is incapable of doing himself. The UK entries were never very good, apart from Walking On Sunshine of course, but the rest fo Europe put more effort into being awful than even we do and somehow they all like each others offering but consider ours dated.