"The feeling of the people is that we want to say no to what exists to prove that we exist." German Member of European Parliament Daniel Cohn-Bendit
The urge to say no in order to validate your existence. Sounds odd, but its happening in Europe right now with the impending referrenda for the European constitution. As on Dutch woman said, "I just feel good saying no for once."
And the same is happening in France, where people are upset about a myriad of social and economic concerns not related to the European Constitution and they are expressing their anger by saying "non" to the EU.
To me, that's a very interesting concept, that one could cast your vote as a protest vote, but at the same time knowing you are possibly harming the greater Union.
But on another level, I can completely relate to the human need to exert some independance, especially by saying no.