Well, looks like it's abundantly clear what's going on right now. Sestak beat Specter in Pennsylvania, Rand won in Kentucky, and Arkansas' Democratic primary is going to a runoff.
Why? Simple. People wanted a change and didn't get it. I think there is a serious danger that people will misinterpret this as some sort of vindication of the teabaggers. It's not.
It is, instead, an indication that people are pissed off about how betrayed they feel by their own elites. They sense that the people at the top are not looking out for them, but just looking out for themselves. The teabaggers are getting manipulated into being ticked off at the wrong people—the ones who aren't just anti-Dem reactionaries—but it's being motivated by the same basic problem.
And, yes, that problem is the economy. Unemployment is still far too high. Opportunity is still lacking. People are still desperately insecure about their own financial future. And, most importantly, the only people who are benefiting from economic and productivity growth are the wealthiest 1%. That ain't right, and people sense that that ain't right, but they've been so thoroughly indoctrinated to fear and despise "class warfare" that they're casting about for other justifications. So they rage about Obamacare, and about TARP, and about cap-and-trade, and everything else that is so "elitist".
Thing is, they are right. They are being screwed over and betrayed by an elite. They're just being mislead as to who that elite is. They're angry at an elite, but it's not the right elite. So it doesn't accomplish anything.
In the meantime, though, they're still ticked, and so incumbents (an elite) are still going to take it on the chin. Bad news for the Dems; but then again, they've richly, richly earned this.