I think its fairly simple. People are feeling the long term affects of a recession and through basic, banal, selfish human behaviour are casting about for someone to blame. So we fall back to where we always fall back, its the "Others" that are to blame, the ones with the wrong language, the wrong colour, the wrong abilities.
And here comes the people who say that they will make those "Others" go away, UKIP, Golden Dawn, Front Nationale so i'll stick my pen to my paper and let them.
And whats EVEN BETTER is that they are all so very reasonable. Care in the community has failed a lot of the time. There is a lot of immigration. There has been terrorism. They ignore or don't look into the realities behind that vote because en masse people aren't that bright and being selfless only generally occurs when it costs us nothing.
The second reason is that they seem to be the only party who attracts both rich and poor. The poor because "They are taking our jobs" the rich because "The EU is a waste of my taxes".
Dangerous and should not be underestimated, I am genuinely afraid for my mixed race children's future when their educated, business owning grandfather who adores them more than he could ever express and would cut the throat of any threat to them can protest vote UKIP.