i think it was mostly a classical rebalancing of power and no doubt some disatisfaction with Obama from both Teabagger and Repubs (who already hated him) and Dems/progressives who were unhappy that he didn't follow through on some of his promises or had greater expectations.
I also think a large portion who came out to vote in the presidential election just didn't bother to show up for the mid-terms. That's kind of the reason why people like O'Donnell won the primary in her state. The people who would have supported her Republican rival just didn't bother to show up and instead they got a Dem for their laziness
How do you explain the incredible shift in women voters and independants?Also,republicans picked up 680 seats in state houses[another record],if all elections are local,how do you explain that?
By the way,your wrIGHT on ODonnell.Reid DESTROYED ODonnells opponent in the primary.He started his dirty attack ads way back then.Nevada is a dark blue state.By the time the primary vote came arounf ODonnells opponent was obliterated.