From the photo journal of Callie Shell

Waiting: Obama listens from a back stairwell as he is introduced in Muscatine, Iowa. It was his second or third speech of the day. Unlike many of the politicians I have photographed in the past, I find it is easy to get a photograph of Obama alone. He lets his staff do their jobs and not fuss over him. Nov. 7, 2007.

I loved that he cleaned up after himself before leaving an ice cream shop in Wapello, Iowa. He didn't have to. The event was over and the press had left. He is used to taking care of things himself and I think this is one of the qualities that makes Obama different from so many other political candidates I've encountered. Nov. 7, 2007.

It was primary morning in New Hampshire. Barack and Michelle Obama had been campaigning separately all week. In the first few months of 2008 their private time seemed to consist of a few crossover moments in back hallways before rallies. This moment was rare and you could tell they just loved being able to sit together. Jan. 8, 2008.