Suppose you flipped another set of 20 coins and got 8 heads. Now, suppose Herkimer is a candidate for political office. We are now statistically literate. Being statistically literate, you know that the question is still relatively meaningless. To give it any meaning at all, you need to know something about the sample sizes.
Lets look at two scenarios.
That is, we don't have strong evidence to suggest a change in voter attitude. We are not claiming there hasn't been a change. Now there is sufficient evidence to reject Ho. We are not claiming there has been a change in voter attitude.