Lesson Number One
There will be much to say about the loss of the Massachusetts Senate seat, but the first lesson is the most obvious one: if you want to win a campaign, campaign like you want to win.
Martha Coakley followed the Ned Lamont model, by essentially disappearing after winning the primary. Given that Massachusetts borders Connecticut, you'd have thought she would have learned. She didn't. And even a late push by the party's big guns couldn't save her.
Lamont gave Lieberman the time and space to get back on his feet and regain the initiative. Coakley gave Brown an opportunity he never should have had. She didn't deserve to win this Senate seat. But we didn't deserve to lose it.