You keep posting this Intrade poll as if it means something. It was wrong on a number of '10 races (as were you on nearly all of your predictions) and it was wrong on Obamacare.
You're a broken record. 
Their record on the 2008 presidential race was more accurate than RCP, gallup, 538, and rassmussen.
The fact you have 'right leaning' and 'left leaning' polling organizations should cast doubt on their weekly findings.
The fact they're completely unaccountable... I mean, if Intrade is wrong, they PAY for it. They put their money where their mouth is.
I find their number to be more accurate than most polling groups, which fluctuate hugely from week to week. And in 2008 they were more accurate. They aren't perfect at everything, but they sure know presidential races.