The first survey was all political, ughhhh I am disgusted by our political system. How often do get surveys?
I have averaged 1 per day so far. My first one was political as well, but the one I got today was questions from all over the place (ranging from greenhouse gases, electric vehicle use, the US response in Libya and what State I live in). I can only assume that Google is attempting to narrow down what topics you know about, how you lean politically, are you a 'green' person, what kind of electronics you use, and so forth.
Supposedly, the surveys will get more in line with your personal viewpoints the more you take. I believe this is Google's way of getting Google Now to become more 'self-aware' to each users needs. Sky-Net here I come.