What else can we say? I'll let Ashby pick this up in more detail later since he's been covering it here, so I'll keep this brief. I'm sure today will see random accusations of voter fraud and significant money advantages for Walker.
We could spend a lot of time blaming this or that, but you know what? We were out-hustled again. As hard as everyone worked to get Walker recalled, it simply wasn't enough. They raised more money (by a margin of 8 to 1) and got out more voters.
Reality is on our side. We just need to do a better job selling it to the voters who matter. That means better framing, better arguments and more message unity/cohesion. Until then, voters will continue to vote against their best interests and bastards like Walker will continue to win in spite of what's best.
Adding... I know the circumstances were slightly different, but when Gray Davis was recalled in California, you know who the Republicans ran against him? Arnold Fricking Schwarzenegger. A rock star of epic proportions (his politics aside). And in Wisconsin, the Democrats ran Tom Barrett the Human Yawn who had already lost to Walker in 2010. Good job, Democrats.