Obama

What an amazing accomplishment. And to think America went from "I have a dream" to Obama within my lifetime.
As disappointed as I am that Hillary didn't make it, and as upsetting as it was to see the demonization of Hillary and of women in this campaign, it's easy to be enthusiastic about the man who will be, I hope and believe, the next president of the United States. Chris Bowers analyzes how he did it. It comes down to this:

Without his opposition to the Iraq war, Obama doesn't dominate among activists to nearly the same extent. And without his activist advantage, he doesn't win the nomination. The DFH's delivered Obama the nomination.