They were US Expats - Americans living abroad - that were polled.Most of the US voted him back in though, right? He got my vote!
According to this- http://www.prycewarner.com/news-us-expats-sup... he's been proven ever popular almost all around the world (owing for China!).
"US expats overwhelmingly favoured Obama. 96% of expats in France, 82% in Germany and 66% in the UK supported Obama. In fact, expats in only one country supported Mitt Romney; China."
Three out of the four countries included have social democracies - no surprise Americans living there would support Obama.
Interestingly, Americans living in China supported Romney. You should probably be asking yourself why.