August 4, 2007 was the 46th birthday of Barack Obama, and the New Hampshire campaign celebrated with a canvass in several cities. I answered the call to go to Portsmouth, where I spent four hours in very hot weather knocking on doors in nearby Dover.  My partner was Will Gattis of Falmouth, Maine, who happens to be a terrific singer-songwriter, as well as a young man who believes Obama is a dream candidate who just might change the country.  You can hear "Christopher," Will's song that closes the podcast, and several others at his MySpace page .