The thing many don't understand is: the more complicated a constitution is, the more a compromise it is. There are things for everybody; it's a compromise. If they vote no, it will be the current situation (the Nice treaty) and it's much less what they really want.
In Belgium, we live in constant compromises and texts become more and more complicated. It's perhaps annoying but we're not alone on this planet and plenty of people, groups, minorities...have rights as well as obligations.
I'm a little reassured to hear more reasonable people argue that if they voted no, it will be as if they sawed the very branch they sit on.

Raoul