Marc Ambinder has an excellent post about the technology the Obama campaign used to get out the vote. It's a basic overview, but, as someone who used this stuff for several months, he seems to get it exactly right. He also pays attention to how the DNC laid the groundwork. What he doesn't capture, largely because he's doing play-by-play, not color analysis, is how gutsy it was to develop a lot of new technology on the fly, and at the last minute. During the primaries, the technology we used for GoTV was changing almost daily. Entire Web sites were launched with just a few weeks to go before the primary. Managers came and went with some alacrity.
It was occasionally frustrating, but it was also inspiring. Decisions were made quickly, and mistakes corrected almost as quickly. The people in charge stayed calm during some rather stressful episodes. And, at the end of the day, the stuff actually worked.