I called this way before anyone else:
If the election were held today, they would lose 65 to 70 seats. The GOP would win the highest percentage of the Congressional vote since the 1920s.
I seriously doubt that they would have done that well in Dec. 2009.
There was basically no change in jobs between Dec. 2009 and Nov. 2010. Yes, about 650,000 new jobs were added, but more than that many people entered the workforce. So already in Dec. 2009, the macro-environment was set up for a 60 to 70 seat Dem loss. That is what I meant by "if the election were held today". My hope at the time was that 2010 would see 200,000 jobs created per month, so that by November the Dems could have held the losses to 40-50. Unfortunately that hope was not realized.