I just looked at the Poll breakout, of the questions and N demographics. The only thing I didn't see was the accuracy range. Looks like a valid poll to me. The graphic depicting the results is for display "prettiness", and isn't what you'd see in a scientific journal, but it's not designed to lie either.
If you want to know more about statistical analysis obtain a copy of
How to Lie with Statistics which is used in many university level statistics classes.