Because of experiences like this one (and my email in-tray is now full of them):

I drove for two hours yesterday to Bangor with my sister and daughter to see Barack speak in Maine. I figured it would be interesting to see a candidate speak, when Maine is typically forgotten. We made the mistake of getting there about an hour before the doors opened to the Bangor Auditorium, as the population of the city had increased by a third for his speech. We waited in the longest line I had ever seen in my life for almost two hours. We met some wonderful people, many younger and surprisingly many quite a bit older. After all of that waiting, we were only a few hundred feet from the auditorium when we were told that the main room had filled to capacity as well as the overflow room. Just when we were ready to turn back, we were told that Barack would speak to us outside, and would do so FIRST.

So imagine a scene like the stump speeches only read about in books, people jostling on snowbanks, climbing fences, trees, even each other in the calm cold that was Maine yesterday to hear and see Barack, for only a few minutes. And did he deliver.

There was excitement, there was hope, and there were specifics. Talk of new ways to use our old industrial centers, dead and forgotten by the establishment. Talk of help with college tuition. Talk of thinking about our children and grandchildren first. He then spent time talking to and shaking hands with the crowd before going in.