What's a "blue wave"? I expect the Dems to take over the House by a comfortable margin - like finishing the night with 12 to 20 more seats than the GOP. I expect the GOP to hold the Senate and even perhaps pick up a seat or two. And I expect a few very important governorships to go to the Dems, with a net pickup of 6 to 8.
From where I sit, I think you pretty much nailed it.
So, what do you charge for a reading?