Lots of great election day commentary all over the blogs today.
Political Wire surmises that the decision by Lieberman to go indy was the turning point:
Sen. Joe Lieberman's (D-CT) decision to make contingency plans to run as an independent in the event he lost today's Senate primary may have been the turning point in this campaign. Though no polls asked the question, the decision will almost certainly cost him votes.That decision was one of the decisive events in the campaign. It probably reinforced what people were already thinking.