You may have already seen this video. It's been on some of my friends' blogs and elsewhere. It also garnered a lot of criticism from the right, boosting it's validity to some.
And the director, Davis Guggenheim was been attacked by the right as well (full disclosure, Davis directed the episode of DEADWOOD I was on and was one of the nicest, most decent and humble directors I ever worked with in my several decades of acting in movies and TV).
And I'm sure there are quibbles we all could make about Obama's choices of what problems to address when, or about his compromising on some issues etc. But as campaign films go, this one's pretty moving if you watch it all the way to the end, which I urge you to do, if only to piss off our rightwing blog stalker(s).