[Avarion]

I was going to say exactly what Aaerdan said. The same goes for current UK polls; some of the statistics put the Tories 11% ahead of Labour, where others reckon that both parties are separated by only a few points. You can't survey an entire country; specific areas will lean one way where others will lean another, and some will be more mixed. Consensus is difficult to achieve where there are localised pockets of political opinion.